US3342892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of linear polyaryl ethers
Assignee: Eastman Kodak Co
•
Filing: 1964-08-07
•
Granted: 1967-09-19
•
Expires: 1984-08-07
Abstract
No abstract record available.
Inventors
- 👤 Thomas M Laakso
- 👤 James J Saturno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:07
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/34; C08G65/38; C08G65/44; Y; Y10; Y10S; Y10S525/00; Y10S525/905
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
A PROCESS FOR PREPARING A SOLUBLE FILM- AND FIBERFORMING, CRYSTALLING 2,6-DIALKYL-1,4-PHENYLENE OXIDE LINEAR POLYMER HAVING A MOLECULAR WEIGHT OF ABOUT 15,000100,000 AND CONSISTING ESSENTIALLY OF THE RECURRING STRUCTURAL UNIT:
Claim 2
Dependent Claim
29 words
A PROCESS FOR PREPARING A SOLUBLE FILM- AND FIBERFORMING, CRYSTALLING 2,6-DIALKYL-1,4-PHENYLENE OXIDE LINEAR POLYMER HAVING A MOLECULAR WEIGHT OF ABOUT 15,000100,000 AND CONSISTING ESSENTIALLY OF THE RECURRING STRUCTURAL UNIT:
References Cited (Backward Citations)
US3134753A
Cited
US3221080A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |