US4490008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Infrared fibers
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1982-10-26
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Granted: 1984-12-25
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Expires: 2002-10-26
Abstract
Abstract This invention relates to an infrared fiber excellent in elongation as well as tensile strength and yield strength, which comprises a mixed crystal containing 0.01 to 10% by weight of silver chloride in silver bromide or a mixed crystal containing 0.01 to 10% by weight of silver bromide in silver chloride.
Inventors
- 👤 Kazuhito Murakami
- 👤 Kenichi Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:02
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/10; G02B6/102; C; C03; C03C; C03C13/00; C03C13/008; C30; C30B; C30B11/00; C30B29/00; C30B29/10; C30B29/12; C30B29/60; C30B29/62; C30B33/00; G02B1/00; G02B1/02; B; B29; B29C; B29C48/00; B29C48/03; B29C48/05; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2929; Y10T428/2933; Y10T428/294; Y10T428/2958; Y10T428/296
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
43 words
An infrared fiber comprising a core consisting of a mixed crystal containing 0.01 to 10% by weight of silver chloride in silver bromide and a cladding consisting of a mixed crystal containing 0.01 to 10% by weight of silver bromide in silver chloride.
Claim 2
Dependent Claim
43 words
An infrared fiber comprising a core consisting of a mixed crystal containing 0.01 to 10% by weight of silver chloride in silver bromide and a cladding consisting of a mixed crystal containing 0.01 to 10% by weight of silver bromide in silver chloride.
Claim 3
Dependent Claim
46 words
The infrared fiber of claim 1, wherein the core consists of a mixed crystal containing 1 to 3.5% by weight of silver chloride in silver bromide and the cladding consists of a mixed crystal containing 1 to 3.5% by weight of silver bromide in silver chloride.
Claim 4
Dependent Claim
15 words
The infrared fiber of claim 1, wherein the cladding is coated with a protective layer.
Claim 5
Dependent Claim
19 words
The infrared fiber of claim 3, wherein the protective layer is of a water-proof and dense plastic or rubber.
Claim 6
Dependent Claim
43 words
The infrared fiber of claim 4, wherein the plastic or rubber is selected from the group consisting of ABS resins, polybutadiene, polypropylene, polycarbonates, polyvinyl chloride, polyphenylene oxide, polysulfones, polyester imides, polyesters, polyurethanes, polyols, polyimides, polyamideimides, silicone resins, tetrafluororesins, epoxy resins and mixtures thereof.
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) | 1987-12-25 | 1988-06-25 | 1988-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-25 | 1992-06-25 | 1992-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-25 | 1996-06-25 | 1996-12-25 | $7700.00 | Window Closed / Lapsed |