Patent US3216848A successfully refreshed from Google Patents.
US3216848A
Expired / Lapsed
US
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Primer for vinyl dispersion coatings
Assignee: PPG Industries Inc
•
Filing: 1962-01-12
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Granted: 1965-11-09
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Expires: 1982-01-12
Abstract
No abstract record available.
Inventors
- 👤 Donald P Hart
- 👤 Roger M Christenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:05
CPC Classifications
C; C09; C09D; C09D133/00; C09D133/04; C09D133/06; C09D133/10; C09D161/00; C09D161/04; C09D161/06; C09D163/00; C08; C08L; C08L61/00; C08L61/20; C08L63/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31522; Y10T428/31678; Y10T428/31688; Y10T428/31855; Y10T428/31859; Y10T428/31877
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
49 words
A PRIMER FOR A VINYL DISPERSION COATING CONSISTING ESSENTIALLY OF (1) AN EPOXY RESIN, (2) A PHENOL-FORMALDEHYDE RFESIN, AND (3) AN INTERPOLYMER OF METHYL METHACRYOLATE AND FROM ABOUT 2 PERCENT TO ABOUT 40 PERCENT BY WEIGHT BASED ON SAID INTERPOLYMER OF AT LEAST ONE COMPOUND REPRESENTED BY THE FORMULA:
Claim 2
Dependent Claim
49 words
A PRIMER FOR A VINYL DISPERSION COATING CONSISTING ESSENTIALLY OF (1) AN EPOXY RESIN, (2) A PHENOL-FORMALDEHYDE RFESIN, AND (3) AN INTERPOLYMER OF METHYL METHACRYOLATE AND FROM ABOUT 2 PERCENT TO ABOUT 40 PERCENT BY WEIGHT BASED ON SAID INTERPOLYMER OF AT LEAST ONE COMPOUND REPRESENTED BY THE FORMULA:
Claim 3
Dependent Claim
27 words
AN ARTICLE OF MANUFACTURE COMPRISING A SUBSTRATE HAVING THEREON AN ADHERENT COATING OF THE RESINOUS COMPOSITION OF CLAIM 1 AND HAVING SUPERIMPOSED THEREON A THERMOPLASTIC POLYMERIC MATERIAL.
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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) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |