Patent US3573262A successfully refreshed from Google Patents.
US3573262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber stock compositions containing n,n'-dilactamdisulfides
Assignee: Rhein Chemie Rheinau GmbH
•
Filing: 1968-09-16
•
Granted: 1971-03-30
•
Expires: 1988-09-16
Abstract
Abstract A VULCANIZABLE RUBBER STOCK COMPOSITIONS OF IMPROVED STORABILITY IS OBTAINED BY FORMING AN INTIMATE MIXTURE INCLUDING AS ESSENTIAL CONSTITUENTS AT LEAST ONE DISENERUBBER AND A SULFUR DONOR INCLUDING AN EFFECTIVE AMOUNT OF AT LEAST ONE N,N''-DILACTAMDISULFIDE, WHICH MIXTURE MAY BE STORED FOR PROLONGED PERIODS OF TIME AT RELATIVELY HIGH TEMPERATURE WITHOUT LOSING ITS VULCANIZATION CHARACTERISTICS.
Inventors
- 👤 Klaus Morche
- 👤 Helfried Ehrend
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 03:10
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/43
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |