US2609364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of form-stable, rubberlike polyvinyl n-butyl ethers
Assignee: GAF Chemicals Corp
•
Filing: 1945-04-11
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Granted: 1952-09-02
•
Expires: 1965-04-11
Abstract
No abstract record available.
Inventors
- 👤 Abraham O Zoss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:53
CPC Classifications
C; C08; C08F; C08F16/00; C08F16/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
THE PROCESS OF PRODUCING FORM-STABLE, RUBBERLIKE POLYMERS OF VINYL N-BUTYL ETHER WHICH COMPRISES UNIFORMLY ADMIXING VINYL N-BUTYL ETHER AND AN ACID-REACTING CONDENSING AGENT SELECTED FROM THE CLASS CONSISTING OF BORON TRIFLUORIDE AND ITS ADDITION PRODUCT WITH AN ETHER AT A TEMPERATURE BELOW -100* C., SUBSEQUENTLY ELEVATING THE TEMPERATURE OF THE MIXTURE TO A POINT RANGING FROM -45* C. TO -80* C. AND MAINTAINING SUCH TEMPERATURE UNIFORMLY THROUGHOUT THE REACTION.
Claim 2
Dependent Claim
69 words
THE PROCESS OF PRODUCING FORM-STABLE, RUBBERLIKE POLYMERS OF VINYL N-BUTYL ETHER WHICH COMPRISES UNIFORMLY ADMIXING VINYL N-BUTYL ETHER AND AN ACID-REACTING CONDENSING AGENT SELECTED FROM THE CLASS CONSISTING OF BORON TRIFLUORIDE AND ITS ADDITION PRODUCT WITH AN ETHER AT A TEMPERATURE BELOW -100* C., SUBSEQUENTLY ELEVATING THE TEMPERATURE OF THE MIXTURE TO A POINT RANGING FROM -45* C. TO -80* C. AND MAINTAINING SUCH TEMPERATURE UNIFORMLY THROUGHOUT THE REACTION.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-02 | 1956-03-03 | 1956-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-02 | 1960-03-03 | 1960-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-02 | 1964-03-03 | 1964-09-02 | $7700.00 | Window Closed / Lapsed |