Patent US3074914A successfully refreshed from Google Patents.
US3074914A
Expired / Lapsed
US
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Cyclobutane derivative polymers
Assignee: Dow Chemical Co
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Filing: 1957-04-04
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Granted: 1963-01-22
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Expires: 1977-04-04
Abstract
No abstract record available.
Inventors
- 👤 Armen Ardy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:30
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/199; C08G69/00; C08G69/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A POLYMERIC COMPOSITION SELECTED FRON THE GROUP OF LINEAR CONDENSATION POLYMERS CONSISTING OF RECURRING UNITS OF THE POLYMER UNITS REPRESENTED BY THE FOLLOWING GENERIC FORMULAE:
Claim 2
Dependent Claim
25 words
A POLYMERIC COMPOSITION SELECTED FRON THE GROUP OF LINEAR CONDENSATION POLYMERS CONSISTING OF RECURRING UNITS OF THE POLYMER UNITS REPRESENTED BY THE FOLLOWING GENERIC FORMULAE:
References Cited (Backward Citations)
GB461237A
Cited
US2130523A
Cited
US2284896A
Cited
US2268586A
Cited
US2389662A
Cited
US2750411A
Cited
US2913433A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |