Patent US3362934A successfully refreshed from Google Patents.
US3362934A
Expired / Lapsed
US
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Preparation of poly-(1, 4-phenylene ethers) by thermal means
Assignee: General Electric Co
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Filing: 1966-05-03
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Granted: 1968-01-09
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Expires: 1986-05-03
Abstract
No abstract record available.
Inventors
- 👤 Donald A Bolon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:45
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/34; C08G65/38; Y; Y10; Y10S; Y10S525/00; Y10S525/905
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
THE PROCESS OF MAKING POLYPHENYLENE ETHER WHICH COMPRISES HEATING IN THE LIQUID PHASE, A 4-PHENOXYPHENOL HAVING THE FORMULA
Claim 2
Dependent Claim
18 words
THE PROCESS OF MAKING POLYPHENYLENE ETHER WHICH COMPRISES HEATING IN THE LIQUID PHASE, A 4-PHENOXYPHENOL 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) | 1971-01-08 | 1971-07-10 | 1972-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-08 | 1975-07-10 | 1976-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-08 | 1979-07-10 | 1980-01-09 | $7700.00 | Window Closed / Lapsed |