Patent US3635534A successfully refreshed from Google Patents.
Patent US2943078A successfully refreshed from Google Patents.
US2943078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chloroprene polymers containing a thio pyrimidine accelerator
Assignee: Vanderbilt Chemicals LLC
•
Filing: 1957-02-26
•
Granted: 1960-06-28
•
Expires: 1977-02-26
Abstract
No abstract record available.
Inventors
- 👤 Jack C Bacon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:55
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A VULCANIZABLE POLYCHLOROPRENE COMPOSITION FREE FROM UNDESIRABLE SCORCHY PROPERTIES COMPRISING AN UNVULCANIZED CHLOROPRENE POLYMER AND FROM ABOUT 0.05% TO ABOUT 5.0% OF THE WEIGHT OF THE POLYMER OF AN ACCELERATOR WHICH IS 2-THIO-4,4,6-TRIMETHYL TETRAHYDRO PYRIMIDINE.
Claim 2
Dependent Claim
35 words
A VULCANIZABLE POLYCHLOROPRENE COMPOSITION FREE FROM UNDESIRABLE SCORCHY PROPERTIES COMPRISING AN UNVULCANIZED CHLOROPRENE POLYMER AND FROM ABOUT 0.05% TO ABOUT 5.0% OF THE WEIGHT OF THE POLYMER OF AN ACCELERATOR WHICH IS 2-THIO-4,4,6-TRIMETHYL TETRAHYDRO PYRIMIDINE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |