Patent US4328140A successfully refreshed from Google Patents.
US4328140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluoroelastomer processing aid
Assignee: RM Engineered Products Inc
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Filing: 1980-10-03
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Granted: 1982-05-04
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Expires: 2000-10-03
Abstract
Abstract The processing, handling and other properties of fluoroelastomers are improved by the addition of effective amounts of oleic acid and low molecular weight polyethylene as processing aids.
Inventors
- 👤 Michael P. Singletary
- 👤 James L. Fabian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:15
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08L; C08L27/00; C08L27/02; C08L27/12; C08L27/16; C08L23/00; C08L23/02; C08L23/04; C08L23/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
20 words
Copolymers of vinylidene fluoride and hexafluoropropylene containing oleic acid and low molecular weight polyethylene in effective amounts as processing aids.
Claim 2
Dependent Claim
20 words
Copolymers of vinylidene fluoride and hexafluoropropylene containing oleic acid and low molecular weight polyethylene in effective amounts as processing aids.
Claim 3
Independent Claim
47 words
A method for improved processing of copolymers of vinylidene fluoride and hexafluoropropylene, said method comprising preparing a mixture comprising from about 0.25 to about 4 parts of oleic acid to one part low molecular weight polyethylene, and incorporating said mixture into said copolymers as a processing aid.
Claim 4
Independent Claim
47 words
A method for improved processing of copolymers of vinylidene fluoride and hexafluoropropylene, said method comprising preparing a mixture comprising from about 0.25 to about 4 parts of oleic acid to one part low molecular weight polyethylene, and incorporating said mixture into said copolymers as a processing aid.
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) | 1985-05-03 | 1985-11-02 | 1986-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-03 | 1989-11-02 | 1990-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-03 | 1993-11-02 | 1994-05-04 | $7700.00 | Window Closed / Lapsed |