US3331795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel coating compositions
Assignee: FMC Corp
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Filing: 1962-10-09
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Granted: 1967-07-18
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Expires: 1982-10-09
Abstract
No abstract record available.
Inventors
- 👤 Theodore R Hopper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:27
CPC Classifications
C; C09; C09D; C09D163/00; C09D163/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A NOVEL COATING COMPOSITION, WHICH COMPRISES A COAL TAR HAVING A SOFTENING POINT OF 35-60*C., 0.9-1.1 PARTS, PER PART OF COAL TAR, OF AN EPOXIDIZED POLYBUTADIENE HAVING AN EPOXY OXYGEN CONTENT OF 8-10% BY WEIGHT, 0.7-1.0 EQUIVALENT, PER EQUIVALENT OF EPOXY OXYGEN, OF CHLORENDIC ANHYDRIDE, AND 0.K-2% BY WEIGHT, BASED UPON THE EPOXIDIZED POLYBUTADIENE, OF STANNOUS OCTOATE.
Claim 2
Dependent Claim
57 words
A NOVEL COATING COMPOSITION, WHICH COMPRISES A COAL TAR HAVING A SOFTENING POINT OF 35-60*C., 0.9-1.1 PARTS, PER PART OF COAL TAR, OF AN EPOXIDIZED POLYBUTADIENE HAVING AN EPOXY OXYGEN CONTENT OF 8-10% BY WEIGHT, 0.7-1.0 EQUIVALENT, PER EQUIVALENT OF EPOXY OXYGEN, OF CHLORENDIC ANHYDRIDE, AND 0.K-2% BY WEIGHT, BASED UPON THE EPOXIDIZED POLYBUTADIENE, OF STANNOUS OCTOATE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |