US3274144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricated polycarbonate compositions
Assignee: Dow Chemical Co
•
Filing: 1962-01-02
•
Granted: 1966-09-20
•
Expires: 1982-01-02
Abstract
No abstract record available.
Inventors
- 👤 Keskkula Henno
- 👤 Cleown A Leatherman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:39
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A COMPOSITION OF MATTER COMPRISING A SYNTHETIC ORGANIC POLYCARBONATE AND FROM ABOUT 0.1 PERCENT TO ABOUT 10 PERCENT OF A COMPOUND OF THE GENERAL FORMULA
Claim 2
Dependent Claim
25 words
A COMPOSITION OF MATTER COMPRISING A SYNTHETIC ORGANIC POLYCARBONATE AND FROM ABOUT 0.1 PERCENT TO ABOUT 10 PERCENT OF A COMPOUND OF THE GENERAL FORMULA
References Cited (Backward Citations)
US2789964A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |