US2892004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the isomerization of non-vulcanized rubber
Assignee: Bayer AG
•
Filing: 1954-03-16
•
Granted: 1959-06-23
•
Expires: 1974-03-16
Abstract
No abstract record available.
Inventors
- 👤 Bartl Herbert
- 👤 Becker Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:16
CPC Classifications
C; C08; C08C; C08C19/00; C08C19/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
PROCESS FOR THE ISOMERIZATION OF NON-VULCANIZED RUBBER WHICH COMPRISES MIXING ABOUT 0.3 TO 1.0 PART BY WEIGHT OF SOLID NON-VULCANIZED RUBBER WITH 1 PART BY WEIGHT OF A RUBBER SOLVENT AND ABOUT 10-30% BY WEIGHT, BASED ON THE WEIGHT OF RUBBER, OF AN ACID ISOMERIZING AGENT, AND SUBJECTING THE MIXTURE TO A TEMPERATURE RANGING FROM ABOUT 90* C. TO ABOUT 140* C., WHEREBY ISOMERIZATION OF THE RUBBER AND DISSOLUTION OF THE ISOMERIZED RUBBER OCCURS.
Claim 2
Dependent Claim
74 words
PROCESS FOR THE ISOMERIZATION OF NON-VULCANIZED RUBBER WHICH COMPRISES MIXING ABOUT 0.3 TO 1.0 PART BY WEIGHT OF SOLID NON-VULCANIZED RUBBER WITH 1 PART BY WEIGHT OF A RUBBER SOLVENT AND ABOUT 10-30% BY WEIGHT, BASED ON THE WEIGHT OF RUBBER, OF AN ACID ISOMERIZING AGENT, AND SUBJECTING THE MIXTURE TO A TEMPERATURE RANGING FROM ABOUT 90* C. TO ABOUT 140* C., WHEREBY ISOMERIZATION OF THE RUBBER AND DISSOLUTION OF THE ISOMERIZED RUBBER OCCURS.
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) | 1962-06-22 | 1962-12-22 | 1963-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-22 | 1966-12-22 | 1967-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-22 | 1970-12-22 | 1971-06-23 | $7700.00 | Window Closed / Lapsed |