Patent US2215481A successfully refreshed from Google Patents.
Patent US3941632A successfully refreshed from Google Patents.
US3941632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and composition for applying a covering to a wall or like substrate
Assignee: Individual
•
Filing: 1975-03-17
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Granted: 1976-03-02
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Expires: 1995-03-17
Abstract
Abstract Method and composition for applying a surface covering to a wall or like substrate. The surface covering comprises a flexible strip or sheet of substantially dry, semi-hydrated gypsum, bonded to a re-enforcing mesh or lath. The method includes the steps of coating the rear face of the surface covering sheet with aqueous latex adhesive in an amount which will transfer sufficient water from the adhesive to the gypsum to hydrate and set the gypsum, and, at the same time, invert the latex to a tacky, adherent state; and applying the adhesive-coated surface covering to the substrate.
Inventors
- 👤 Clyde J. Swedenberg
- 👤 Charles C. Fain
- 👤 William W. Rutledge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:49
CPC Classifications
E; E04; E04F; E04F13/00; E04F13/002; Y; Y10; Y10S; Y10S428/00; Y10S428/906; Y10S428/907; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/24339; Y10T428/24347; Y10T428/31504; Y10T428/31855; Y10T428/31935
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
63 words
A method of applying to a substrate, a surface covering, comprising a substantially dry, semi-hydrated gypsum, said method comprising the steps of: coating the gypsum with an aqueous latex adhesive in an amount which will transfer sufficient water from the adhesive to the gypsum to hydrate and set the gypsum and invert the latex, and applying the adhesive-coated surface covering to the substrate.
Claim 2
Independent Claim
63 words
A method of applying to a substrate, a surface covering, comprising a substantially dry, semi-hydrated gypsum, said method comprising the steps of: coating the gypsum with an aqueous latex adhesive in an amount which will transfer sufficient water from the adhesive to the gypsum to hydrate and set the gypsum and invert the latex, and applying the adhesive-coated surface covering to the substrate.
Claim 3
Dependent Claim
42 words
The method of claim 1, in which the surface covering further comprises a roll of flexible lath to which the semi-hydrated gypsum is bonded, said roll of surface covering being unrolled into sheet form prior to coating it with the latex adhesive.
Claim 4
Dependent Claim
17 words
The method of claim 1, in which said aqueous latex adhesive comprises a polyvinyl acetate water emulsion.
Claim 5
Dependent Claim
20 words
The method of claim 1, in which the step of coating the gypsum includes a plasticizer for the latex adhesive.
Claim 6
Dependent Claim
20 words
The method of claim 1, in which the step of coating the gypsum includes a solvent for the latex adhesive.
References Cited (Backward Citations)
US3383271A
Cited
US3607486A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-02 | 1979-09-01 | 1980-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-02 | 1983-09-01 | 1984-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-02 | 1987-09-01 | 1988-03-02 | $7700.00 | Window Closed / Lapsed |