US3043821A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of vinyl phosphonates using organometallic catalysts
Assignee: Eastman Kodak Co
•
Filing: 1958-05-02
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Granted: 1962-07-10
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Expires: 1978-05-02
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry W Coover
- 👤 Marvin A Mccall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:33
CPC Classifications
C; C08; C08F; C08F30/00; C08F30/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
A PROCESS FOR PREPARING A POLYMERIZED 1-ALKENYL PHOISPHONATE HAVING AN INTRISIC VISCOSITY OF AT LEAST 0.6 COMPRISING AGITATING IN AN INERT DILUENT AT FROM ABOUT -20*C. TO ABOUT 120*C., A VINYL PHOSPHONATE COMPOUND HAVING THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
38 words
A PROCESS FOR PREPARING A POLYMERIZED 1-ALKENYL PHOISPHONATE HAVING AN INTRISIC VISCOSITY OF AT LEAST 0.6 COMPRISING AGITATING IN AN INERT DILUENT AT FROM ABOUT -20*C. TO ABOUT 120*C., A VINYL PHOSPHONATE COMPOUND HAVING THE FOLLOWING GENERAL FORMULA:
References Cited (Backward Citations)
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US2636027A
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US2780616A
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US2671106A
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US2743261A
Cited
US2827475A
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US2841574A
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US2818406A
Cited
US2871263A
Cited
US2854434A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-09 | 1966-01-08 | 1966-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-09 | 1970-01-08 | 1970-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-09 | 1974-01-08 | 1974-07-10 | $7700.00 | Window Closed / Lapsed |