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Patent US3207727A successfully refreshed from Google Patents.
US3207727A
Expired / Lapsed
US
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Method of stabilizing polyoxymethylene
Assignee: Kurashiki Rayon Co Ltd
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Filing: 1962-07-17
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Granted: 1965-09-21
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Expires: 1982-07-17
Abstract
No abstract record available.
Inventors
- 👤 Matsubayashi Kanji
- 👤 Fujii Kiyoshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:14
CPC Classifications
C; C08; C08G; C08G2/00; C08G2/18; C08G2/26; C08G2/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A METHOD OF STABILIZING POLYOXYMETHYLENE WHICH COMPRISES REACTING POLYOXYMETHLENE WITH VINYL ETHERS REPRESENTED BY THE FOLLOWING GENERAL FORMULA
Claim 2
Independent Claim
18 words
A METHOD OF STABILIZING POLYOXYMETHYLENE WHICH COMPRISES REACTING POLYOXYMETHLENE WITH VINYL ETHERS REPRESENTED BY THE FOLLOWING GENERAL FORMULA
References Cited (Backward Citations)
US2296249A
Cited
US2844561A
Cited
US2893972A
Cited
US2936298A
Cited
GB848660A
Cited
US3087913A
Cited
US3002952A
Cited
FR1272971A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |