Patent US5877895A successfully refreshed from Google Patents.
US5877895A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multicolor interference coating
Assignee: Catalina Coatings Inc
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Filing: 1995-03-20
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Granted: 1999-03-02
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Expires: 2015-03-20
Abstract
Abstract Several techniques may be used for forming a colored interference filter coating on a substrate such as polyester film. The interference filter has two metal reflective films, at least one of which is semi-transparent. A layer of transparent acrylate polymer dielectric between the metal layers completes the interference filter, which may be sandwiched between protective layers. The dielectric is formed by evaporating an acrylate monomer having a molecular weight in the range of from 150 to 600. Preferably the acrylate monomer has a molecular weight to acrylate group ratio in the range of from 150 to 400. The acrylate condenses on the substrate and is polymerized in situ for forming a monolithic film with a sufficient thickness to produce an interference color. In several embodiments different areas of the film have different thicknesses for producing different interference colors. The thickness of the dielectric can be controlled by the amount of monomer condensed, by either controlling the temperature of the condensation surface or controlling the amount of monomer evaporated adjacent a predetermined area of the substrate. Thickness may also be controlled by condensing a uniform layer of monomer and polymerizing the monomer to different degrees for varying the shrinkage of the film and hence the thickness of the film and color.
Inventors
- 👤 David G. Shaw
- 👤 Daniel S. Cline
- 👤 Eric P. Dawson
- 👤 Marc Langlois
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:51
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/20; G02B5/28; G02B5/285; G02B5/287; B; B42; B42D; B42D25/00; B42D25/20; B42D25/29; G02B5/286; G06; G06K; G06K19/00; G06K19/06; G06K19/06009; G06K19/06046; B42D2035/24; G06K2019/06215; G06K2019/06225; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31699
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
91 words
An interference color filter comprising: a first at least partially reflective and partially transparent layer; an evaporated, condensed and crosslinked transparent acrylate layer on the at least partially reflective layer having a molecular weight to acrylate group ratio in the range of from 150 to 400, the acrylate layer having a thickness sufficient for producing an interference color; and a second at least partially reflective layer on the opposite face of the acrylate layer from the first reflective layer; and wherein the filter is broken up to form colored pigment flakes.
Claim 2
Dependent Claim
91 words
An interference color filter comprising: a first at least partially reflective and partially transparent layer; an evaporated, condensed and crosslinked transparent acrylate layer on the at least partially reflective layer having a molecular weight to acrylate group ratio in the range of from 150 to 400, the acrylate layer having a thickness sufficient for producing an interference color; and a second at least partially reflective layer on the opposite face of the acrylate layer from the first reflective layer; and wherein the filter is broken up to form colored pigment flakes.
Claim 3
Dependent Claim
21 words
An interference color filter as recited in claim 1 wherein one of the reflective layers comprises a substantially completely reflective metal.
Claim 4
Dependent Claim
25 words
An interference color filter as recited in claim 1 further comprising a protective layer of crosslinked acrylate covering at least one of the reflective layers.
Claim 5
Dependent Claim
15 words
An interference color filter as recited in claim 1 wherein both reflective layers are semi-reflective.
Claim 6
Dependent Claim
103 words
An interference color filter comprising: a first evaporated, condensed and crosslinked transparent acrylate layer having a molecular weight per acrylate group in the range of from 150 to 400, the acrylate layer having a thickness sufficient for producing an interference color; an at least partially reflective layer on one face of the acrylate layer; and a second evaporated, condensed and crosslinked transparent acrylate layer having a molecular weight per acrylate group in the range of from 150 to 400, the acrylate layer having a thickness sufficient for producing an interference color; and wherein the filter is broken up to form colored pigment flakes.
Claim 7
Dependent Claim
103 words
An interference color filter comprising: a first evaporated, condensed and crosslinked transparent acrylate layer having a molecular weight per acrylate group in the range of from 150 to 400, the acrylate layer having a thickness sufficient for producing an interference color; an at least partially reflective layer on one face of the acrylate layer; and a second evaporated, condensed and crosslinked transparent acrylate layer having a molecular weight per acrylate group in the range of from 150 to 400, the acrylate layer having a thickness sufficient for producing an interference color; and wherein the filter is broken up to form colored pigment flakes.
Claim 8
Dependent Claim
59 words
A reflective flake pigment comprising: a first crosslinked transparent acrylate layer having a molecular weight per acrylate group in the range of from 150 to 400; a reflective metal layer on one face of the acrylate layer; and a second crosslinked transparent acrylate layer having a molecular weight per acrylate group in the range of from 150 to 400.
Claim 9
Dependent Claim
59 words
A reflective flake pigment comprising: a first crosslinked transparent acrylate layer having a molecular weight per acrylate group in the range of from 150 to 400; a reflective metal layer on one face of the acrylate layer; and a second crosslinked transparent acrylate layer having a molecular weight per acrylate group in the range of from 150 to 400.
Claim 10
Dependent Claim
124 words
An interference color filter comprising: a first crosslinked transparent acrylate layer having a molecular weight per acrylate group in the range of from 150 to 400; a first at least partially reflective layer on one face of the acrylate layer; a second crosslinked transparent acrylate layer having a molecular weight per acrylate group in the range of from 150 to 400, the acrylate layer having a thickness sufficient for producing an interference color; a second at least partially reflective layer over the second acrylate layer; and a third crosslinked transparent acrylate layer having a molecular weight per acrylate group in the range of from 150 to 400 over the second reflective layer; and wherein the filter is broken up to form colored pigment flakes.
Claim 11
Dependent Claim
124 words
An interference color filter comprising: a first crosslinked transparent acrylate layer having a molecular weight per acrylate group in the range of from 150 to 400; a first at least partially reflective layer on one face of the acrylate layer; a second crosslinked transparent acrylate layer having a molecular weight per acrylate group in the range of from 150 to 400, the acrylate layer having a thickness sufficient for producing an interference color; a second at least partially reflective layer over the second acrylate layer; and a third crosslinked transparent acrylate layer having a molecular weight per acrylate group in the range of from 150 to 400 over the second reflective layer; and wherein the filter is broken up to form colored pigment flakes.
Claim 12
Dependent Claim
87 words
An interference color filter comprising: a first at least partially reflective and partially transparent layer; an evaporated condensed and crosslinked transparent acrylate layer on the at least partially reflective layer having a molecular weight to acrylate group ratio in the range of from 150 to 400, the acrylate layer having a thickness in the range of from 800 to 4000 Ångstroms for producing an interference color; and a second at least partially reflective layer on the opposite face of the acrylate layer from the first reflective layer.
Claim 13
Dependent Claim
87 words
An interference color filter comprising: a first at least partially reflective and partially transparent layer; an evaporated condensed and crosslinked transparent acrylate layer on the at least partially reflective layer having a molecular weight to acrylate group ratio in the range of from 150 to 400, the acrylate layer having a thickness in the range of from 800 to 4000 Ångstroms for producing an interference color; and a second at least partially reflective layer on the opposite face of the acrylate layer from the first reflective layer.
Claim 14
Dependent Claim
62 words
A multiple color interference filter comprising: a substrate; and a monolithic acrylate polymer film deposited on the substrate with a sufficient thickness for producing interference color, a predetermined area of the acrylate film having a first thickness and a second area of the acrylate film adjacent to the predetermined area having a second thickness different from the thickness of the predetermined area.
Claim 15
Dependent Claim
62 words
A multiple color interference filter comprising: a substrate; and a monolithic acrylate polymer film deposited on the substrate with a sufficient thickness for producing interference color, a predetermined area of the acrylate film having a first thickness and a second area of the acrylate film adjacent to the predetermined area having a second thickness different from the thickness of the predetermined area.
Claim 16
Dependent Claim
66 words
A multiple color interference filter comprising: a substrate; and a monolithic acrylate polymer film deposited on the substrate with a sufficient thickness for producing interference color, a predetermined area of the acrylate film having a first degree of polymerization and a second area of the acrylate film adjacent to the predetermined area having a second degree of polymerization different from the polymerization of the predetermined area.
Claim 17
Dependent Claim
66 words
A multiple color interference filter comprising: a substrate; and a monolithic acrylate polymer film deposited on the substrate with a sufficient thickness for producing interference color, a predetermined area of the acrylate film having a first degree of polymerization and a second area of the acrylate film adjacent to the predetermined area having a second degree of polymerization different from the polymerization of the predetermined area.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-03-01 | 2002-08-31 | 2003-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-03-01 | 2006-08-31 | 2007-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-03-01 | 2010-08-31 | 2011-03-02 | $7700.00 | Window Closed / Lapsed |