Patent US3227677A successfully refreshed from Google Patents.
US3227677A
Expired / Lapsed
US
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Polyolefins containing bis(hydrocarbyloxycarbonylalkylthioalkyl) phenols as stabilizers
Assignee: Phillips Petroleum Co
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Filing: 1962-01-02
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Granted: 1966-01-04
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Expires: 1982-01-02
Abstract
No abstract record available.
Inventors
- 👤 Billy D Simpson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:45
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/37; C08K5/375
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
A STABILIZED POLYMER OF A 1-OLEFIN HAVING 2-8 CARBON ATOMS PER MOLECULE PRODUCED BY INCORPORATING INTO SAID POLYMER A STABILIZING AMOUNT OF A COMPOUND OF THE GENERAL FORMULA:
Claim 2
Dependent Claim
28 words
A STABILIZED POLYMER OF A 1-OLEFIN HAVING 2-8 CARBON ATOMS PER MOLECULE PRODUCED BY INCORPORATING INTO SAID POLYMER A STABILIZING AMOUNT OF A COMPOUND OF THE GENERAL FORMULA:
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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) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |