US3030333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light stabilized polypropylene
Assignee: Shell USA Inc
•
Filing: 1958-08-12
•
Granted: 1962-04-17
•
Expires: 1978-08-12
Abstract
No abstract record available.
Inventors
- 👤 Galvin M Coppinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:35
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
COMPOSITIONS COMPRISING A SOLID POLYMER OF PROPYLENE AND FROM 0.05 TO 5% BY WEIGHT OF THE POLYMER OF P.P''DIPHENOXYDIPHENYL ETHER, THE COMPOSITION ALSO CONTAINING TRACES OF A METAL SELECTED FROM GROUP IV A OF THE PERIODIC TABLE.
Claim 2
Dependent Claim
37 words
COMPOSITIONS COMPRISING A SOLID POLYMER OF PROPYLENE AND FROM 0.05 TO 5% BY WEIGHT OF THE POLYMER OF P.P''DIPHENOXYDIPHENYL ETHER, THE COMPOSITION ALSO CONTAINING TRACES OF A METAL SELECTED FROM GROUP IV A OF THE PERIODIC TABLE.
References Cited (Backward Citations)
US2157068A
Cited
US2448799A
Cited
GB652730A
Cited
US2874146A
Cited
US2834768A
Cited
US2852488A
Cited
US2861053A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |