Patent US2653924A successfully refreshed from Google Patents.
US2653924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vulcanization accelerators
Assignee: Sharples Chemicals Inc
•
Filing: 1950-12-23
•
Granted: 1953-09-29
•
Expires: 1970-12-23
Abstract
No abstract record available.
Inventors
- 👤 John F Olin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:57
CPC Classifications
C; C08; C08K; C08K9/00; C08K9/08; C08L; C08L21/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A RUBBER ACCELERATOR PRODUCT, COMPRISING AT LEAST ONE NORMALLY SOLID RUBBER ACCELERATOR SALT OF N-DISUBSTITUTED DITHIOCARBAMIC ACID HAVING APPLIED THERETO, IN AMOUNT FROM 0.5% TO 20% BY WEIGHT BASED ON ACCELERATOR, ONE OF THE GROUP CONSISTING OF POLYBUTENE AND HYDROGENATED POLYBUTENE, THE AVERAGE MOLECULAR WEIGHT OF THE APPLIED MATERIAL BEING BETWEEN 500 AND 5000.
Claim 2
Dependent Claim
54 words
A RUBBER ACCELERATOR PRODUCT, COMPRISING AT LEAST ONE NORMALLY SOLID RUBBER ACCELERATOR SALT OF N-DISUBSTITUTED DITHIOCARBAMIC ACID HAVING APPLIED THERETO, IN AMOUNT FROM 0.5% TO 20% BY WEIGHT BASED ON ACCELERATOR, ONE OF THE GROUP CONSISTING OF POLYBUTENE AND HYDROGENATED POLYBUTENE, THE AVERAGE MOLECULAR WEIGHT OF THE APPLIED MATERIAL BEING BETWEEN 500 AND 5000.
References Cited (Backward Citations)
US2343835A
Cited
US2392847A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-28 | 1957-03-30 | 1957-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-28 | 1961-03-30 | 1961-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-28 | 1965-03-30 | 1965-09-29 | $7700.00 | Window Closed / Lapsed |