Patent US2504903A successfully refreshed from Google Patents.
US2504903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of plasticizing rubber
Assignee: EIDP Inc
•
Filing: 1947-10-17
•
Granted: 1950-04-18
•
Expires: 1967-10-17
Abstract
No abstract record available.
Inventors
- 👤 Sturgis Bernard Miller
- 👤 Verbanc John Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:22
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/45
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
THE METHOD OF DECREASING THE RESISTANCE TO FLOW OF UNVULCANIZED RUBBER COMPRISING INCORPORATING 0.05% TO 5% BY WEIGHT BASES ON THE UNVULCANIZED RUBBER OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF UNSUBSTITUTED A-THIENYL MERCAPTAN, ITS CORRESPONDING DISULFIDE, ITS ZINC SALT, AND ITS ESTERS DERIVED FROM CARBOXYLIC ACIDS CONTAINING 1 TO 8 CARBON ATOMS.
Claim 2
Independent Claim
54 words
THE METHOD OF DECREASING THE RESISTANCE TO FLOW OF UNVULCANIZED RUBBER COMPRISING INCORPORATING 0.05% TO 5% BY WEIGHT BASES ON THE UNVULCANIZED RUBBER OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF UNSUBSTITUTED A-THIENYL MERCAPTAN, ITS CORRESPONDING DISULFIDE, ITS ZINC SALT, AND ITS ESTERS DERIVED FROM CARBOXYLIC ACIDS CONTAINING 1 TO 8 CARBON ATOMS.
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) | 1953-04-17 | 1953-10-17 | 1954-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-17 | 1957-10-17 | 1958-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-17 | 1961-10-17 | 1962-04-18 | $7700.00 | Window Closed / Lapsed |