US5094902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Skid-resistant surface marking material
Assignee: 3M Co
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Filing: 1990-04-27
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Granted: 1992-03-10
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Expires: 2010-04-27
Abstract
Abstract A skid-resistant, surface marking material is disclosed. The skid-resistant, surface marking material comprises a polymer matrix phase and a plurality of opaque ceramic spheroids partially embedded in and protruding from the top surface of the matrix layer. The ceramic spheroids have rounded surfaces and no substantial points.
Inventors
- 👤 Robert A. Haenggi
- 👤 James A. Laird
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:40
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/45; C04B41/4584; C04B26/00; C04B26/02; C04B26/10; C04B26/16; C04B41/80; C04B41/81; E; E01; E01F; E01F9/00; E01F9/50; E01F9/506; E01F9/512; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24372; Y10T428/24421; Y10T428/2443
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
62 words
A skid-resistant, surface marking material, comprising: (a) a polymer matrix phase having a top surface; and (b) a plurality of opaque, skid-resistant ceramic spheroids partially embedded in and protruding from the top surface of the polymer matrix phase, wherein said ceramic spheroids have rounded surfaces and no substantial points, and wherein said ceramic spheroids have a Krumbein roundness of at least 0.8.
Claim 2
Dependent Claim
62 words
A skid-resistant, surface marking material, comprising: (a) a polymer matrix phase having a top surface; and (b) a plurality of opaque, skid-resistant ceramic spheroids partially embedded in and protruding from the top surface of the polymer matrix phase, wherein said ceramic spheroids have rounded surfaces and no substantial points, and wherein said ceramic spheroids have a Krumbein roundness of at least 0.8.
Claim 3
Dependent Claim
35 words
The skid-resistant, surface marking material of claim 1, wherein said ceramic spheroids comprise 3 to 97 parts by weight of a vitreous matrix phase and 3 to 97 parts by weight of a crystalline phase.
Claim 4
Dependent Claim
18 words
The skid-resistant, surface marking material of claim 2, further comprising a base sheet underlying the polymer matrix phase.
Claim 5
Dependent Claim
34 words
The skid-resistant, surface marking material of claim 2, wherein the vitreous matrix phase comprises a material selected from the group consisting of nepheline syenite, basalt, feldspar, shale, argillite, pyroxene, talc, wollastonite, and mixtures thereof.
Claim 6
Dependent Claim
17 words
The skid-resistant, surface marking material of claim 2, wherein the vitreous matrix phase comprises a clay material.
Claim 7
Dependent Claim
23 words
The skid-resistant, surface marking material of claim 5, wherein the clay is selected from the group consisting of kaolin, bentonite, and mixtures thereof.
Claim 8
Dependent Claim
26 words
The skid-resistant, surface marking material of claim 2, wherein the crystalline phase comprises a material selected from the group consisting of alumina, mullite, and mixtures thereof.
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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) | 1995-03-10 | 1995-09-09 | 1996-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-10 | 1999-09-09 | 2000-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-10 | 2003-09-09 | 2004-03-10 | $7700.00 | Window Closed / Lapsed |