US2993799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic containing composition and the process of making the same
Assignee: Individual
•
Filing: 1957-08-20
•
Granted: 1961-07-25
•
Expires: 1977-08-20
Abstract
No abstract record available.
Inventors
- 👤 Charles L Blake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:20
CPC Classifications
C; C08; C08K; C08K7/00; C08K7/02; C08K7/04; C08K7/10; C08K7/12; C08K3/00; C08K3/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1454939A
Cited
US1996757A
Cited
US2067012A
Cited
US2066734A
Cited
US2189889A
Cited
US2325570A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |