US3262911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted polyphenylene ethers
Assignee: General Electric Co
•
Filing: 1961-11-29
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Granted: 1966-07-26
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Expires: 1981-11-29
Abstract
No abstract record available.
Inventors
- 👤 Allan S Hay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:35
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/34; C08G65/48; C08G65/485; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S525/00; Y10S525/905; Y10S525/919
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
THE PROCESS OF PREPARING HALOMETHYL-SUBSTITUTED POLYPHENYLENE ETHERS WHICH COMPRISES REACTING A HALOGENATING AGENT SELECTED FROM THE GROUP CONSISTING OF CHLORINATING AND BROMINATING AGENTS UNDER SIDE CHAIN HALOGENATING CONDITIONS WITH A POLYPHENYLENE ETHER HAVING THE STRUCTURAL FORMULA
Claim 2
Dependent Claim
36 words
THE PROCESS OF PREPARING HALOMETHYL-SUBSTITUTED POLYPHENYLENE ETHERS WHICH COMPRISES REACTING A HALOGENATING AGENT SELECTED FROM THE GROUP CONSISTING OF CHLORINATING AND BROMINATING AGENTS UNDER SIDE CHAIN HALOGENATING CONDITIONS WITH A POLYPHENYLENE ETHER HAVING THE STRUCTURAL FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |