US2629707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of lap-resistant synthetic rubber
Assignee: Armstrong World Industries Inc
•
Filing: 1950-06-16
•
Granted: 1953-02-24
•
Expires: 1970-06-16
Abstract
No abstract record available.
Inventors
- 👤 Jacob E Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:38
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; Y; Y10; Y10S; Y10S526/00; Y10S526/938
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A PROCESS OF PREPARING A RUBBERLIKE MULTIPOLYMER WHICH COMPRISES FORMING AN AQUEOUS MIXTURE CONTAINING SORBIC ACID, AND EMULSIFYING AGENT, AND A CATALYST FOR EMULSION POLYMERIZATION WHILE MAINTAINING A TEMPERATURE BETWEEN ABOUT 80* C. AND 100* C., ADDING TO SAID MIXTURE BUTADIENE AND ACRYLONITRILE, AND AGITATINGG THE RESULTING EMULSION WHILE MAINTAINING TEMPERATURE CONDITIONS BETWEEN ABOUT 50* F. AND 175* F.
Claim 2
Dependent Claim
59 words
A PROCESS OF PREPARING A RUBBERLIKE MULTIPOLYMER WHICH COMPRISES FORMING AN AQUEOUS MIXTURE CONTAINING SORBIC ACID, AND EMULSIFYING AGENT, AND A CATALYST FOR EMULSION POLYMERIZATION WHILE MAINTAINING A TEMPERATURE BETWEEN ABOUT 80* C. AND 100* C., ADDING TO SAID MIXTURE BUTADIENE AND ACRYLONITRILE, AND AGITATINGG THE RESULTING EMULSION WHILE MAINTAINING TEMPERATURE CONDITIONS BETWEEN ABOUT 50* F. AND 175* F.
References Cited (Backward Citations)
US2422932A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-24 | 1956-08-25 | 1957-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-24 | 1960-08-25 | 1961-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-24 | 1964-08-25 | 1965-02-24 | $7700.00 | Window Closed / Lapsed |