US2719132A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization catalyst and methacrylic acid diester compositions polymerized therewith
Assignee: EIDP Inc
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Filing: 1954-05-25
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Granted: 1955-09-27
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Expires: 1974-05-25
Abstract
No abstract record available.
Inventors
- 👤 Francis E Schweitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:51
CPC Classifications
C; C08; C08F; C08F291/00; C08F4/00; C08F4/06; C09; C09D; C09D4/00; C09D4/06; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/31504; Y10T428/31786; Y10T428/3179
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
71 words
A POLYMERIZABLE LIQUID COATING COMPOSITION COMPRISING ABOUT EQUAL PROPORTIONS OF A MONOMERIC METHACRYLIC ACID DIESTER OF A SATURATED ALIPHATIC DIHYDRIC ALCOHOL AND CELLULOSE NITRATE, SAID DIHYDRIC ALCOHOL HAVING A MOLECULAR WEIGHT IN THE RANGE OF ABOUT 100 TO 300, A VOLATILE SOLVENT FOR SAID CELLULOSE NITRATE, A POLYMERIZATION INITIATOR FOR SAID MONOMERIC DIESTER COMPRISING A MIXTURE CONSISTING OF ABOUT .05 PART OF COBALTOUS NITRATEHEXAHYDRATE AND ABOUT 0.16 PART OF CERIUM(OUS) NITRATEHEXAHYDRATE.
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) | 1958-09-26 | 1959-03-28 | 1959-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-26 | 1963-03-28 | 1963-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-26 | 1967-03-28 | 1967-09-27 | $7700.00 | Window Closed / Lapsed |