Patent US3399284A successfully refreshed from Google Patents.
US3399284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indicating device
Assignee: Bayer Corp
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Filing: 1966-03-23
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Granted: 1968-08-27
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Expires: 1986-03-23
Abstract
No abstract record available.
Inventors
- 👤 Morison Ayers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:08
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/02; G01N33/04; B; B01; B01D; B01D15/00; B01D15/08; G01K; G01K3/00; G01K3/02; G01K3/04; G01N11/00; G01N13/00; G01N13/02; G01N31/00; G01N31/22; B01L; B01L3/00; B01L3/50; B01L3/502; B01L3/5023; G01N30/00; G01N30/02; G01N30/60; G01N30/6052; G01N30/6065; G01N30/90; G01N30/92; Y; Y10; Y10T; Y10T137/00; Y10T137/5327; Y10T137/5438; Y10T137/5444
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
AN INDICATOR DEVICE FOR COMPLETING AN ELECTRICAL CIRCUIT ON THE COMPLETION OF A MEASURING FUNCTION COMPRISING A POROUS CAPILLARY MATERIAL CHARACTERIZED BY CONNECTED VOIDS OF SUFFICIENTLY SMALL SIZE TO INDUCE THE PROGRESSIVE ABSORPTION OF A FLUID, AN IMPERVIOUS COVERING MATERIAL ENCLOSING AT LEAST THE MAJOR PORTION OF THE EXTERIOR SURFACES OF SAID CAPILLARY MATERIAL AND DISPOSED IN INTIMATE CONTACT THEREWITH DEFINING AN ABSORPTIVE CAVITY OF A PRESELECTED VOLUME, SAID DEVICE CONSTRUCTED TO PROVIDE DIRECTIONAL GUIDANCE THROUGH SAID ABSORPTIVE CAVITY OF AN ELECTRICALLY CONDUCTIVE FLUID CONTACTING AN EXPOSED SURFACE OF SAID CAPILLARY MATERIAL, A FIRST ELECTRICAL CONDUCTOR IN CONTACT WITH A PORTION OF SAID CAPILLARY MATERIAL, A SECOND ELECTRICAL CONDUCTOR IN CONTACT WITH A PORTION OF SAID CAPILLARY MATERIAL AND SPACED FROM SAID FIRST CONDUCTOR, SAID ELECTRICALLY CONDUCTIVE FLUID ADAPTED TO COMPLETE AN ELECTRICAL CIRCUIT BETWEEN SAID FIRST AND SAID SECOND ELECTRICAL CONDUCTORS IN RESPONSE TO THE PENETRATION OF SAID FLUID INTO SAID CAPILLARY MATERIAL AND INTO CONTACT WITH SAID CONDUCTORS.
Claim 2
Dependent Claim
160 words
AN INDICATOR DEVICE FOR COMPLETING AN ELECTRICAL CIRCUIT ON THE COMPLETION OF A MEASURING FUNCTION COMPRISING A POROUS CAPILLARY MATERIAL CHARACTERIZED BY CONNECTED VOIDS OF SUFFICIENTLY SMALL SIZE TO INDUCE THE PROGRESSIVE ABSORPTION OF A FLUID, AN IMPERVIOUS COVERING MATERIAL ENCLOSING AT LEAST THE MAJOR PORTION OF THE EXTERIOR SURFACES OF SAID CAPILLARY MATERIAL AND DISPOSED IN INTIMATE CONTACT THEREWITH DEFINING AN ABSORPTIVE CAVITY OF A PRESELECTED VOLUME, SAID DEVICE CONSTRUCTED TO PROVIDE DIRECTIONAL GUIDANCE THROUGH SAID ABSORPTIVE CAVITY OF AN ELECTRICALLY CONDUCTIVE FLUID CONTACTING AN EXPOSED SURFACE OF SAID CAPILLARY MATERIAL, A FIRST ELECTRICAL CONDUCTOR IN CONTACT WITH A PORTION OF SAID CAPILLARY MATERIAL, A SECOND ELECTRICAL CONDUCTOR IN CONTACT WITH A PORTION OF SAID CAPILLARY MATERIAL AND SPACED FROM SAID FIRST CONDUCTOR, SAID ELECTRICALLY CONDUCTIVE FLUID ADAPTED TO COMPLETE AN ELECTRICAL CIRCUIT BETWEEN SAID FIRST AND SAID SECOND ELECTRICAL CONDUCTORS IN RESPONSE TO THE PENETRATION OF SAID FLUID INTO SAID CAPILLARY MATERIAL AND INTO CONTACT WITH SAID CONDUCTORS.
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) | 1971-08-27 | 1972-02-26 | 1972-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-27 | 1976-02-26 | 1976-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-27 | 1980-02-26 | 1980-08-27 | $7700.00 | Window Closed / Lapsed |