Patent US4808650A successfully refreshed from Google Patents.
US4808650A
Expired / Lapsed
US
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High clarity polyolefin compositions and clarifying additive therein
Assignee: Becton Dickinson and Co
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Filing: 1988-03-14
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Granted: 1989-02-28
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Expires: 2008-03-14
Abstract
Abstract Polyolefin compositions of high clarity containing clarifying amounts of fluorinated dibenzylidene sorbitol additives.
Inventors
- 👤 George R. Titus
- 👤 Joel L. Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:17
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/156; C08K5/1575
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
16 words
A composition comprising a polyolefin and from about 0.4% to about 0.6% by weight 3,4,3',4'-tetrafluorodibenzylidene sorbitol.
Claim 2
Dependent Claim
16 words
A composition comprising a polyolefin and from about 0.4% to about 0.6% by weight 3,4,3',4'-tetrafluorodibenzylidene sorbitol.
Claim 3
Dependent Claim
20 words
The composition of claim 1 wherein said polyolefin is selected from the group consisting of polyethylene, polypropylene, polymethylpentene and polytetrafluoroethylene.
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) | 1992-02-28 | 1992-08-29 | 1993-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-28 | 1996-08-29 | 1997-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-28 | 2000-08-29 | 2001-02-28 | $7700.00 | Window Closed / Lapsed |