Patent US6522324B1 successfully refreshed from Google Patents.
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US4931330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prefabricated, slip-resistant surface coating
Assignee: Individual
•
Filing: 1988-03-29
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Granted: 1990-06-05
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Expires: 2008-03-29
Abstract
Abstract The invention relates to a prefabricated, slip-resistant surface coating which comprises a sheet member having a film on its surface, said film embedded therein in plurality of finely divided abrasive particles. This coating can be adapted to make a bathtub surface slip-resistant.
Inventors
- 👤 Sam S. Stier
- 👤 Robert E. Kaufman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:22
CPC Classifications
A; A47; A47K; A47K3/00; A47K3/001; A47K3/002; Y; Y10; Y10T; Y10T428/00; Y10T428/14; Y10T428/1462; Y10T428/24; Y10T428/24355; Y10T428/24372; Y10T428/24421; Y10T428/25; Y10T428/259; Y10T428/28; Y10T428/2835; Y10T428/2848
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
119 words
A prefabricated, self-adhesive and slip-resistant surface coating, comprising: a non-deformable polyethylene terephthalate sheet member providing two opposing surfaces, said sheet member being of a thickness of about 0.005 inches and is rigid and resists shear on said two opposing surface; a film on one surface of said sheet member, said film comprising an acrylic polyurethane and having completely imbedded therein a plurality of finely-divided abrasive silica particles, said particles having an average diameter of from about 150 to 200 microns, said particles being completely covered by said acrylic polyurethane film; and an adhesive layer on the other surface of said sheet member for enabling said surface coating to be attached to any desired location on a smooth receiving surface.
Claim 2
Dependent Claim
119 words
A prefabricated, self-adhesive and slip-resistant surface coating, comprising: a non-deformable polyethylene terephthalate sheet member providing two opposing surfaces, said sheet member being of a thickness of about 0.005 inches and is rigid and resists shear on said two opposing surface; a film on one surface of said sheet member, said film comprising an acrylic polyurethane and having completely imbedded therein a plurality of finely-divided abrasive silica particles, said particles having an average diameter of from about 150 to 200 microns, said particles being completely covered by said acrylic polyurethane film; and an adhesive layer on the other surface of said sheet member for enabling said surface coating to be attached to any desired location on a smooth receiving surface.
Claim 3
Dependent Claim
16 words
A prefabricated, slip-resistant surface coating as recited in claim 1, wherein said sheet member is clear.
Claim 4
Dependent Claim
15 words
A prefabricated, slip-resistant surface coating as recited in claim 2, wherein said film is clear.
Claim 5
Dependent Claim
17 words
A prefabricated, slip-resistant surface coating as recited in claim 2, wherein said film is opaque and colored.
Claim 6
Dependent Claim
26 words
A prefabricated, slip-resistant surface coating as recited in claim 1, wherein the size of said finely-divided particles is about 150 microns average or 200 microns average.
Claim 7
Dependent Claim
35 words
A prefabricated, slip-resistant surface coating as recited in claim 1, adapted to be adhered to the bottom of a bathtub, wherein said adhesive layer on the other surface of said sheet member is essentially waterproof.
Claim 8
Dependent Claim
22 words
A prefabricated, slip-resistant surface coating as recited in claim 6, wherein said sheet member is a thermally stable material substantially without plasticizers.
Claim 9
Dependent Claim
20 words
A prefabricated, slip-resistant surface coating as recited in claim 1, wherein said liquid resin consists essentially of an acrylic polyurethane.
Claim 10
Dependent Claim
26 words
A prefabricated, slip-resistant surface coating as recited in claim 1, wherein said adhesive layer includes a removable non-adhesive covering on the surface of said adhesive substance.
Claim 11
Dependent Claim
28 words
A prefabricated, slip-resistant surface coating as recited in claim 9, wherein said film and said adhesive substance cover substantially all of said respective surfaces of said sheet member.
Claim 12
Dependent Claim
20 words
A prefabricated, slip-resistant surface coating as recited in claim 10, wherein said film and said adhesive substance are substantially clear.
Claim 13
Dependent Claim
24 words
A prefabricated, slip-resistant surface coating as recited in claim 10, wherein said adhesive substance is substantially clear and said film is opaque and colored.
Claim 14
Dependent Claim
25 words
A prefabricated, slip-resistant surface coating as recited in claim 9, wherein said sheet member has dimensions permitting it to fit the bottom of a bathtub.
Claim 15
Dependent Claim
19 words
A prefabricated, slip-resistant surface coating as recited in claim 1, wherein said sheet member does not contain a plasticizer.
Claim 16
Dependent Claim
17 words
A prefabricated, slip-resistant surface coating as recited in claim 14, wherein said sheet member is thermally stable.
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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) | 1993-06-04 | 1993-12-04 | 1994-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-04 | 1997-12-04 | 1998-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-04 | 2001-12-04 | 2002-06-05 | $7700.00 | Window Closed / Lapsed |