Patent US3240690A successfully refreshed from Google Patents.
US3240690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymers of 3, 3, 3-trichloropropene
Assignee: Dow Silicones Corp
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Filing: 1959-12-02
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Granted: 1966-03-15
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Expires: 1979-12-02
Abstract
No abstract record available.
Inventors
- 👤 Robert M Murch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:18
CPC Classifications
C; C08; C08F; C08F114/00; C08F114/02; C08F114/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
AS A COMPOSITION OF MATTER A HOMOPOLYMER OF 3,3, 3-TRICHLOROPROPENE WHICH WAS PREPARED BY SUBJECTING 3,3, 3-TRICHLOROPROPENE TO ELECTROMAGNETIC RADIATION AT A TEMPERATURE BELOW 80*C. WHEREBY A HOMOPOLYMER IS FORMED HAVING A MELTING POINT OF AT LEAST 150*C. AND AN EMPIRICAL FORMULA OF (C3H3CL3)X WHERE X IS A POSTIVE INTEGER IN WHICH HOMOPOLYMR THE POLYMER UNITS ARE COMBINED WITH EACH OTHER IN THE 1,3 RELATIONSHIP.
Claim 2
Dependent Claim
65 words
AS A COMPOSITION OF MATTER A HOMOPOLYMER OF 3,3, 3-TRICHLOROPROPENE WHICH WAS PREPARED BY SUBJECTING 3,3, 3-TRICHLOROPROPENE TO ELECTROMAGNETIC RADIATION AT A TEMPERATURE BELOW 80*C. WHEREBY A HOMOPOLYMER IS FORMED HAVING A MELTING POINT OF AT LEAST 150*C. AND AN EMPIRICAL FORMULA OF (C3H3CL3)X WHERE X IS A POSTIVE INTEGER IN WHICH HOMOPOLYMR THE POLYMER UNITS ARE COMBINED WITH EACH OTHER IN THE 1,3 RELATIONSHIP.
References Cited (Backward Citations)
US2281768A
Cited
US2626252A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |