US2838414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective coating composition
Assignee: Individual
•
Filing: 1956-06-18
•
Granted: 1958-06-10
•
Expires: 1976-06-18
Abstract
No abstract record available.
Inventors
- 👤 Claude J Dunphy
- 👤 Clinton J Dunphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:43
CPC Classifications
C; C09; C09D; C09D195/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A PROTECTIVE COMPOSITION FOR ROOFS, METAL SURFACES AND THE LIKE, IN WHICH ARE INCLUDED AS ESSENTIAL INGREDIENTS AND IN INTIMATE ADMIXTURES, COAL TAR, POWDERED ALUMINUM, GROUND ASBESTOS, GYPSUM AND LEAD OXIDE IN APPROXIMATELY THE PROPORTIONS OF COAL TAR 50 GALLONS, POWDERED ALUMINUM 7 POUNDS, GROUND ASBESTOS 10 POUNDS, GYPSUM 8 POUNDS AND LEAD OXIDE 8 POUNDS, THE COAL TAR BEING THINNED AND THE MIXTURE LIQUEFIED BY THE ADDITION OF GASOLINE AND KEROSENE.
Claim 2
Dependent Claim
72 words
A PROTECTIVE COMPOSITION FOR ROOFS, METAL SURFACES AND THE LIKE, IN WHICH ARE INCLUDED AS ESSENTIAL INGREDIENTS AND IN INTIMATE ADMIXTURES, COAL TAR, POWDERED ALUMINUM, GROUND ASBESTOS, GYPSUM AND LEAD OXIDE IN APPROXIMATELY THE PROPORTIONS OF COAL TAR 50 GALLONS, POWDERED ALUMINUM 7 POUNDS, GROUND ASBESTOS 10 POUNDS, GYPSUM 8 POUNDS AND LEAD OXIDE 8 POUNDS, THE COAL TAR BEING THINNED AND THE MIXTURE LIQUEFIED BY THE ADDITION OF GASOLINE AND KEROSENE.
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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) | 1961-06-09 | 1961-12-09 | 1962-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-09 | 1965-12-09 | 1966-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-09 | 1969-12-09 | 1970-06-10 | $7700.00 | Window Closed / Lapsed |