Patent US4807964A successfully refreshed from Google Patents.
US4807964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic optical fiber
Assignee: PPG Industries Inc
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Filing: 1987-06-12
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Granted: 1989-02-28
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Expires: 2007-06-12
Abstract
Abstract Light transmitting plastic fibers having a vinylidene chloride polymer core, and fibers having a core-cladding structure in which the core is the aforedescribed vinylidene chloride polymer and the cladding is a plastic polymeric material having a lower refractive index are described. Graded index fibers of a surface fluorinated vinylidene chloride polymer are also described.
Inventors
- 👤 Edward J. Sare
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:26
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/02; G02B6/02033; G02B6/02038; B; B29; B29C; B29C48/00; B29C48/03; B29C48/05; G02B1/00; G02B1/04; G02B1/045; G02B1/046
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
34 words
A light transmitting plastic optical fiber having a vinylidene chloride polymer as the core component, said vinylidene chloride polymer having a copolymer of vinylidene chloride containing at least 60 mole percent of vinylidene chloride.
Claim 2
Dependent Claim
34 words
A light transmitting plastic optical fiber having a vinylidene chloride polymer as the core component, said vinylidene chloride polymer having a copolymer of vinylidene chloride containing at least 60 mole percent of vinylidene chloride.
Claim 3
Dependent Claim
50 words
The optical fiber of claim 1 wherein the vinylidene chloride polymer is a copolymer of vinylidene chloride and a further monomer selected from the group consisting of styrene, vinyl chloride, acrylonitrile, vinyl acetate, acrylic acid, methacrylic acid, C 1 -C 8 alkyl acrylates and C 1 -C 8 alkyl methacrylates.
Claim 4
Dependent Claim
20 words
The optical fiber of claim 1 wherein the vinylidene chloride polymer is a copolymer of vinylidene chloride and vinyl chloride.
Claim 5
Dependent Claim
19 words
The optical fiber of claim 1 wherein the copolymer contains between abut 70 and 80 mole percent vinylidene chloride.
Claim 6
Dependent Claim
15 words
The optical fiber of claim 3 wherein the vinylidene chloride polymer has a fluorinated surface.
Claim 7
Dependent Claim
15 words
The optical fiber of claim 1 wherein the vinylidene chloride polymer has a fluorinated surface.
Claim 8
Dependent Claim
54 words
A light-transmitting plastic optical fiber having a core-cladding structure, comprising a vinylidene chloride polymer core component and a transparent synthetic polymer having a refractive index less than the vinylidene chloride polymer core as the cladding component, said vinylidene chloride polymer being a vinylidene chloride copolymer containing at least 60 mole percent of vinylidene chloride.
Claim 9
Dependent Claim
54 words
A light-transmitting plastic optical fiber having a core-cladding structure, comprising a vinylidene chloride polymer core component and a transparent synthetic polymer having a refractive index less than the vinylidene chloride polymer core as the cladding component, said vinylidene chloride polymer being a vinylidene chloride copolymer containing at least 60 mole percent of vinylidene chloride.
Claim 10
Dependent Claim
50 words
The optical fiber of claim 7 wherein the vinylidene chloride polymer is a copolymer of vinylidene chloride and a further monomer selected from the group consisting of styrene, vinyl chloride, acrylonitrile, vinyl acetate, acrylic acid, methacrylic acid, C 1 -C 8 alkyl acrylates and C 1 -C 8 alkyl methacrylates.
Claim 11
Dependent Claim
20 words
The optical fiber of claim 7 wherein the vinylidene chloride polymer is a copolymer of vinylidene chloride and vinyl chloride.
Claim 12
Dependent Claim
19 words
The optical fiber of claim 9 wherein the copolymer contains between about 70 and 80 mole percent vinylidene chloride.
Claim 13
Dependent Claim
50 words
The optical fiber of claim 10 wherein the cladding component is poly(vinyl chloride), ethylene-vinyl acetate copolymer, poly(methyl acrylate), poly(methyl methacrylate), mixtures of poly(methyl methacrylate) and fluorine-containing poly(methyl acrylate), polymers and interpolymers of vinyl fluoride, vinylidene fluoride, tetrafluoroethylene, hexafluoroethylene, trifluoromethyl-trifluorovinyl ether, perfluoropropyl-trifluorovinyl ether and fluorinated esters of acrylic or methacrylic acids.
Claim 14
Dependent Claim
15 words
The optical fiber of claim 11 wherein the vinylidene chloride polymer core is surface fluorinated.
Claim 15
Dependent Claim
15 words
The optical fiber of claim 7 wherein the vinylidene chloride polymer core is surface fluorinated.
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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) | 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 |