Patent US3704445A successfully refreshed from Google Patents.
US3277157A
Expired / Lapsed
US
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Polyoxyalkylene acrylates and methacrylates
Assignee: Chevron USA Inc
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Filing: 1963-07-09
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Granted: 1966-10-04
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Expires: 1983-07-09
Abstract
No abstract record available.
Inventors
- 👤 William T Stewart
- 👤 Frank A Stuart
- 👤 Lowe Warren
- 👤 Frank W Kavanagh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:00
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/26; C08F20/28; C08F290/00; C08F290/08; C08F290/14; C08F290/142; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/192; C10L1/195; C10L1/1955; C10L1/196; C10L1/1963; C10L1/1966; C10L1/197; C10L1/1973; C10L1/198; C10L1/1985; C10M2205/00; C10M2207/00; C10M2207/40; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/04; C10M2209/06; C10M2209/062; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/107
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A COMPOUND OF THE GENERAL FORMULA CH2=C(-R)-CO-(O-R")N-O-R'' WHEREIN R'' IS A MEMBER OF THE GROUP CONSISTING OF HYDROGEN AND ALKYL RADICALS OF 1 TO 18 CARBON ATOMS, R IS A MEMBER OF THE GROUP CONSISTING OF HYDROGEN AND METHYL AND R" IS AN ALKYLENE RADICAL OF THE GROUP CONSISTING OF ETHYLENE AND PROPYLENE, WHILE THE SUBSCRIPT N HAS A VALUE NOT LESS THAN 4 AND -(OR")N-OR'' IS DERIVED FROM A POLYALKYLENE GLYCOL WHICH HAS A MOLECULAR WEIGHT BETWEEN ABOUT 400 AND 10,000.
Claim 2
Dependent Claim
82 words
A COMPOUND OF THE GENERAL FORMULA CH2=C(-R)-CO-(O-R")N-O-R'' WHEREIN R'' IS A MEMBER OF THE GROUP CONSISTING OF HYDROGEN AND ALKYL RADICALS OF 1 TO 18 CARBON ATOMS, R IS A MEMBER OF THE GROUP CONSISTING OF HYDROGEN AND METHYL AND R" IS AN ALKYLENE RADICAL OF THE GROUP CONSISTING OF ETHYLENE AND PROPYLENE, WHILE THE SUBSCRIPT N HAS A VALUE NOT LESS THAN 4 AND -(OR")N-OR'' IS DERIVED FROM A POLYALKYLENE GLYCOL WHICH HAS A MOLECULAR WEIGHT BETWEEN ABOUT 400 AND 10,000.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |