Patent US3285997A successfully refreshed from Google Patents.
US3285997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of chlorostyrene and diacrylophenones
Assignee: Dow Chemical Co
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Filing: 1963-07-17
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Granted: 1966-11-15
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Expires: 1983-07-17
Abstract
No abstract record available.
Inventors
- 👤 Louis C Rubens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:26
CPC Classifications
C; C08; C08F; C08F259/00; C08F259/02; C08F259/04; C08F16/00; C08F16/36; C08F212/00; C08F212/02; C08F212/04; C08F212/14; C08F212/16; C08F212/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
A POLYMERIZABLE MONOMERIC MIXTURE COMPRISING A MAJOR PORTION OF A CHLOROSTYRENE SELECTED FROM THE GROUP CONSISTING OF ORTHOCHLOROSTYRENE, METACHLOROSTYRENE, PARACHLOROSTYRENE, 2,3-DICHLOROSTRYENE, 2,4-DICHLOROSTYRENE, 2,5-DICHLOROSTYRENE, 3,4-DICHLOROSTYRENE, 3,5-DICHLOROSTYRENE, STYRENE, AND MIXTURES THEREOF WITH A MINOR PORTION OF A DIACRYLOPHENONE HAVING THE FORMULA:
Claim 2
Dependent Claim
39 words
A POLYMERIZABLE MONOMERIC MIXTURE COMPRISING A MAJOR PORTION OF A CHLOROSTYRENE SELECTED FROM THE GROUP CONSISTING OF ORTHOCHLOROSTYRENE, METACHLOROSTYRENE, PARACHLOROSTYRENE, 2,3-DICHLOROSTRYENE, 2,4-DICHLOROSTYRENE, 2,5-DICHLOROSTYRENE, 3,4-DICHLOROSTYRENE, 3,5-DICHLOROSTYRENE, STYRENE, AND MIXTURES THEREOF WITH A MINOR PORTION OF A DIACRYLOPHENONE HAVING THE FORMULA:
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |