Patent US5045282A successfully refreshed from Google Patents.
US5045282A
Expired / Lapsed
US
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Optical fiber sensing device for analysis
Assignee: (OCT) OPTICAL CHEM TECH Ltd
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Filing: 1988-10-14
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Granted: 1991-09-03
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Expires: 2008-10-14
Abstract
Abstract A sensing device for use in the manufacture of an optic probe apparatus for quantitative determination of the chemical properties of a medium in situ includes at least one glass optical fiber.
Inventors
- 👤 Amnon Kritzman
- 👤 Eliezer Falkenstein
- 👤 Moshe Ish-Shalom
- 👤 Alla Buch
- 👤 Menuha Beer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:22
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/62; G01N21/63; G01N21/64; G01N21/6428; G01N21/643; A; A61; A61B; A61B5/00; A61B5/145; A61B5/1455; A61B5/1459; G01N2021/6434
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
49 words
A sensing device for quantitative determination of the chemical properties of a medium in situ, said device comprising at least one glass optical fiber means having a porous fused glass tip, said fused glass tip being treated after fusing with heat, alkali and acid to render it porous internally.
Claim 2
Dependent Claim
49 words
A sensing device for quantitative determination of the chemical properties of a medium in situ, said device comprising at least one glass optical fiber means having a porous fused glass tip, said fused glass tip being treated after fusing with heat, alkali and acid to render it porous internally.
Claim 3
Dependent Claim
35 words
Device according to claim 1, wherein said porous glass tip has on the internal surface of the pores thereof at least one substance selected from the group consisting of fluorescent and other light sensitive substances.
Claim 4
Dependent Claim
28 words
Device according to claim 2, wherein said at least one substance is an agent which imparts information exclusively by means of internally unmodified intensity of light emitted therefrom.
Claim 5
Dependent Claim
21 words
Device according to claim 1, wherein said at least one glass optical fiber means comprises a single glass optical fiber means.
Claim 6
Dependent Claim
33 words
Device according to claim 1, wherein said at least one glass optical fiber means comprises a plurality of glass optical fiber means each of which has attached thereto a different porous glass tip.
Claim 7
Dependent Claim
66 words
Device according to claim 5, wherein each respective porous glass tip has on the internal surface of the pores thereof a substance selected from the group consisting of fluorescent and other light sensitive substances, such that at least two porous glass tips have adsorbed different said substances, respectively, whereby the device is adapted for the determination of at least two different chemical properties of said medium.
Claim 8
Dependent Claim
20 words
Device according to any one of claim 6, wherein each porous glass tip is coated with a porous polymeric film.
Claim 9
Dependent Claim
27 words
A sensing device according to claim 1 wherein said fused glass tip includes at least one substance from the group consisting of fluorescent and other light-sensitive substances.
Claim 10
Dependent Claim
23 words
Device according to claim 8, wherein said at least one substance is at least one fluorescent substance which is sensitive to ultraviolet light.
Claim 11
Dependent Claim
16 words
A sensing device according to claim 1 wherein said glass optical fiber means comprises fused silica.
Claim 12
Dependent Claim
77 words
Apparatus for quantitative determination of the chemical properties of a medium in situ, which comprises as an optic probe a sensing device which comprises at least one glass optical fiber means including an internally porous glass tip which has been obtained by converting a substantially non-porous glass tip fused thereto and which has on the internal surface of the pores thereof at least one substance selected from the group consisting of fluorescent and other light sensitive substances.
Claim 13
Dependent Claim
77 words
Apparatus for quantitative determination of the chemical properties of a medium in situ, which comprises as an optic probe a sensing device which comprises at least one glass optical fiber means including an internally porous glass tip which has been obtained by converting a substantially non-porous glass tip fused thereto and which has on the internal surface of the pores thereof at least one substance selected from the group consisting of fluorescent and other light sensitive substances.
Claim 14
Dependent Claim
23 words
Apparatus according to claim 11, wherein said at least one substance is at least one fluorescent substance which is sensitive to ultraviolet light.
Claim 15
Dependent Claim
28 words
Apparatus according to claim 11, wherein said at least one substance is an agent which imparts information exclusively by means of internally unmodified intensity of light emitted therefrom.
Claim 16
Dependent Claim
21 words
Apparatus according to claim 11, wherein said at least one glass optical fiber means comprises a single glass optical fiber means.
Claim 17
Dependent Claim
32 words
Apparatus according to claim 11, wherein said at least one glass optical fiber means comprises a plurality of glass optical fiber means each of which has fused thereto a porous glass tip.
Claim 18
Dependent Claim
43 words
Apparatus according to claim 15, wherein at least two porous glass tips have on the internal surface of the pores thereof different said substances, respectively, whereby the device is adapted for the determination of at least two different chemical properties of said medium.
Claim 19
Dependent Claim
19 words
Apparatus according to claim 11, wherein the or each porous glass tip is coated with a porous polymeric film.
Claim 20
Dependent Claim
25 words
Apparatus according to claim 17, wherein said film extends to a portion of the glass optical fiber means adjacent to the or each porous tip.
Claim 21
Dependent Claim
79 words
Apparatus for quantitative determination of the chemical properties of a medium in situ, which comprises as an optic probe a sensing device which comprises at least one fused silica optical fiber means including an internally porous glass tip which has been obtained by converting an internally substantially non-porous glass tip fused thereto and which has on the internal surface of the pores thereof at least one substance selected from the group consisting of fluorescent and other light sensitive substances.
Claim 22
Dependent Claim
79 words
Apparatus for quantitative determination of the chemical properties of a medium in situ, which comprises as an optic probe a sensing device which comprises at least one fused silica optical fiber means including an internally porous glass tip which has been obtained by converting an internally substantially non-porous glass tip fused thereto and which has on the internal surface of the pores thereof at least one substance selected from the group consisting of fluorescent and other light sensitive substances.
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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) | 1994-09-02 | 1995-03-04 | 1995-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-02 | 1999-03-04 | 1999-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-02 | 2003-03-04 | 2003-09-03 | $7700.00 | Window Closed / Lapsed |