US3445393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packing and sealing composition
Assignee: OIL CENTER RESEARCH Inc
•
Filing: 1967-03-21
•
Granted: 1969-05-20
•
Expires: 1987-03-21
Abstract
No abstract record available.
Inventors
- 👤 Cyril Hinds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:45
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/12; Y; Y10; Y10S; Y10S277/00; Y10S277/935; Y10S277/944
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2030504A
Cited
US2504936A
Cited
GB664546A
Cited
US3083238A
Cited
US3247116A
Cited
US3199876A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-19 | 1972-11-18 | 1973-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-19 | 1976-11-18 | 1977-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-19 | 1980-11-18 | 1981-05-20 | $7700.00 | Window Closed / Lapsed |