US3922416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Medium for recording phase holograms
Assignee: RCA Corp
•
Filing: 1972-08-18
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Granted: 1975-11-25
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Expires: 1992-08-18
Abstract
Abstract A transparent polymer substrate having an adhesive coating of an optically clear, embossable thermoplastic resin thereon, is an improved medium for recording holographic information.
Inventors
- 👤 Robert James Ryan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:06
CPC Classifications
G; G03; G03H; G03H1/00; G03H1/02; G03H1/0276; G03H1/028; G03G; G03G5/00; G03G5/02; G03G5/022; G03H2270/00; G03H2270/10; G03H2270/14; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24612; Y10T428/31504; Y10T428/31551; Y10T428/31565; Y10T428/31591; Y10T428/31786
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
97 words
A HOLOGRPAHIC RECORDING MEDIUM WHICH CONSISTS ESSENTIALLY OF A TRANSPARENT POLYMER SUBSTRATE COATED WITH AN ADHERENT, UNIFORM, EMBOSSABLE, OPTICALLY CLEAR THERMOLASTIC RESIN WHREIN THE EMBOSSABLE RESIN IS SELECTED FROM THE GROUP CONSISTING OF A. POLYESTER-BASED POLYURETHANES; B. POLYESTER-BASED POLYURETHANES CONTAINING AN ANTITACKING AGENT; C. LINEAR POLYESTER DERIVED FROM ETHYLENE GLYCOL, TEREPHTHALIC ACID, A*D SEBACID ACID, SAID POLYESTERS HAVING A MOLECULAR WEIGHT IN THE RANGE BETWEEN ABOUT 20,000 TO ABOUT 30,000; AND D. SAID LINEAR POLYESTERS CONTAINING AN ANTI-TACKINFG AGENT THE SURFACE OF SAID RESIN HAVING EMBOSSED THEREON HOLOGRAPHIC INFORMATION IN THE FORM OF A THREE-DIMENSIONAL RELIEF PATTERN.
Claim 2
Dependent Claim
97 words
A HOLOGRPAHIC RECORDING MEDIUM WHICH CONSISTS ESSENTIALLY OF A TRANSPARENT POLYMER SUBSTRATE COATED WITH AN ADHERENT, UNIFORM, EMBOSSABLE, OPTICALLY CLEAR THERMOLASTIC RESIN WHREIN THE EMBOSSABLE RESIN IS SELECTED FROM THE GROUP CONSISTING OF A. POLYESTER-BASED POLYURETHANES; B. POLYESTER-BASED POLYURETHANES CONTAINING AN ANTITACKING AGENT; C. LINEAR POLYESTER DERIVED FROM ETHYLENE GLYCOL, TEREPHTHALIC ACID, A*D SEBACID ACID, SAID POLYESTERS HAVING A MOLECULAR WEIGHT IN THE RANGE BETWEEN ABOUT 20,000 TO ABOUT 30,000; AND D. SAID LINEAR POLYESTERS CONTAINING AN ANTI-TACKINFG AGENT THE SURFACE OF SAID RESIN HAVING EMBOSSED THEREON HOLOGRAPHIC INFORMATION IN THE FORM OF A THREE-DIMENSIONAL RELIEF PATTERN.
Claim 3
Dependent Claim
26 words
A medium according to claim 1 wherein the substrate is selected from the group consisting of linear polyesters, acrylic resins, cellulose acetate resins and polycarbonate resins.
Claim 4
Dependent Claim
17 words
A medium according to claim 2 wherein the substrate is a film of an ethylene terephthalate polymer.
Claim 5
Dependent Claim
20 words
An embossable holographic recording medium consisting essentially of a transparent polymer substrate coated with a thermoplastic polyester-based polyurethane coating resin.
Claim 6
Dependent Claim
20 words
An embossable holographic recording medium consisting essentially of a transparent polymer substrate coated with a thermoplastic polyester-based polyurethane coating resin.
Claim 7
Dependent Claim
37 words
A medium according to claim 1 wherein the coating resin is a polyester derived from ethylene glycol, terephthalic acid and sebacic acid, said polyester having a molecular weight in the range between about 20,000 and about 30,000.
Claim 8
Dependent Claim
33 words
A medium according to claim 1 wherein the linear polyester coating resin contains an antitacking agent which is a vinyl polymer in an amount up to about 20% by weight of the polyester.
Claim 9
Dependent Claim
30 words
A medium according to claim 6 wherein the vinyl polymer is a copolymer of vinyl chloride and about 10 to about 20% by weight of the copolymer of vinyl acetate.
Claim 10
Dependent Claim
16 words
A medium according to claim 7 wherein the substrate is a biaxially oriented polyethylene terephthalate film.
Claim 11
Dependent Claim
16 words
A medium according to claim 4 wherein the substrate is a biaxially oriented polyethylene terephthalate film.
Claim 12
Dependent Claim
19 words
A medium according to claim 9 having embossed holographic information in the form of a three-dimensional relief pattern thereon.
Claim 13
Dependent Claim
35 words
A medium according to claim 1 wherein the antitacking agent in the polyester-based polyurethane coating resin is a cellulose acetate butyrate and said coating resin is up to about 20% by weigHt cellulose acetate butyrate.
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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) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |