US2716636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vulcanization of rubber
Assignee: Wyeth Holdings LLC
•
Filing: 1952-12-23
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Granted: 1955-08-30
•
Expires: 1972-12-23
Abstract
No abstract record available.
Inventors
- 👤 Arnold R Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:32
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A COMPOSITION OBTAINED BY MILLING TOGETHER AN UNVULCANIZED VULCANIZABLE RUBBER AND AN ACCELERATOR WHICH IS A REACTION PRODUCT OF 1-6 MOLS OF FORMALDEHYDE, 1-6 MOLS OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF MERCAPTOBENZOTHIAZOLE AND MERCAPTOTHIAZOLINE, AND ONE MOL OF AN ADDITION PRODUCT WHICH MAY BE REPRESENTS BY THE FORMULA AXZN(B)2 IN WHICH "A" REPRESENTS A DIARYLGUANIDINE, "X" REPRESENTS THE INTERGERS ONE AND TWO, AND "B" REPRESENTS A RADICAL SELECTED FROM THE GROUP CONSISTING OF
Claim 2
Dependent Claim
76 words
A COMPOSITION OBTAINED BY MILLING TOGETHER AN UNVULCANIZED VULCANIZABLE RUBBER AND AN ACCELERATOR WHICH IS A REACTION PRODUCT OF 1-6 MOLS OF FORMALDEHYDE, 1-6 MOLS OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF MERCAPTOBENZOTHIAZOLE AND MERCAPTOTHIAZOLINE, AND ONE MOL OF AN ADDITION PRODUCT WHICH MAY BE REPRESENTS BY THE FORMULA AXZN(B)2 IN WHICH "A" REPRESENTS A DIARYLGUANIDINE, "X" REPRESENTS THE INTERGERS ONE AND TWO, AND "B" REPRESENTS A RADICAL SELECTED FROM THE GROUP CONSISTING OF
References Cited (Backward Citations)
US2397409A
Cited
US2412801A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-29 | 1959-02-28 | 1959-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-29 | 1963-02-28 | 1963-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-29 | 1967-02-28 | 1967-08-30 | $7700.00 | Window Closed / Lapsed |