US3227674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions comprising polyacetals and secondary and/or tertiary polyhaloalcohols
Assignee: EIDP Inc
•
Filing: 1962-11-19
•
Granted: 1966-01-04
•
Expires: 1982-11-19
Abstract
No abstract record available.
Inventors
- 👤 William J Middleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:47
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C08J5/08; C08G; C08G2/00; C08G2/28; C08K; C08K5/00; C08K5/04; C08K5/05; C08J2359/00; C08J2359/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A COMPOSITION OF MATTER COMPRISING, IN INTIMATE HOMOGENEOUS ADMIXTURE, (A) A SYNTHETIC, ESSENTIALLY LINEAR POLYMER HAVING A MOLECULAR WEIGHT OF AT LEAST 5000 IN WHICH AT LEAST TWO-THIRDS OF THE REPEATING UNITS CONTAIN OPEN-CHAIN ACETAL LINKAGES, SAID POLYMER BEING SELECTED FROM THE GROUP CONSISTING OF (I) POLYACETALS IN WHICH SAID REPEATING UNITS ARE
Claim 2
Dependent Claim
53 words
A COMPOSITION OF MATTER COMPRISING, IN INTIMATE HOMOGENEOUS ADMIXTURE, (A) A SYNTHETIC, ESSENTIALLY LINEAR POLYMER HAVING A MOLECULAR WEIGHT OF AT LEAST 5000 IN WHICH AT LEAST TWO-THIRDS OF THE REPEATING UNITS CONTAIN OPEN-CHAIN ACETAL LINKAGES, SAID POLYMER BEING SELECTED FROM THE GROUP CONSISTING OF (I) POLYACETALS IN WHICH SAID REPEATING UNITS ARE
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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 |