US3250754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical composition carboxyl substituted polymethylene polymers and processes for their preparation
Assignee: EIDP Inc
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Filing: 1962-04-26
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Granted: 1966-05-10
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Expires: 1982-04-26
Abstract
No abstract record available.
Inventors
- 👤 Jr Clare Augustus Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:32
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/06; Y; Y10; Y10S; Y10S260/00; Y10S260/31
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A PROCESS FOR PREPARING NORMALLY SOLID CHAIN-SATURATED, SIDE-CHAIN CARBOXYL-SUBSTITUTED POLYMETHYLENE POLYMERS, WHICH PROCESS COMPRISES (I) CONTACTING A COPOLYMER OF (A) AT LEAST ONE STRAIGHT-CHAIN A-MONOOLEFIN OF FROM 2 TO 8 CARBON ATOMS AND (B) AT LEAST ONE NON-CONJUGATED C5-C22 HYDROCARBON DIENE OF AN ALIPHATIC OPENCHAIN STRUCTURE, WITH OZONE WHILE IN AN OZONE-RESISTANT SOLVENT SOLUTION, AND (II) CONTACTING THE RESULTING SOLUTION WITH AN ORGANIC, ACTIVE OXYGEN-CONTAINING PER-ACID.
Claim 2
Dependent Claim
24 words
A PROCESS WHICH COMPRISES (I) COPOLYMERIZING AT LEAST ONE STRAIGHT-CHAIN A-MONOOLEFIN OF FROM 2 TO 8 CARBON ATOMS AND A MONOMER OF THE 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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |