Patent US2641458A successfully refreshed from Google Patents.
Patent US2701832A successfully refreshed from Google Patents.
US2701832A
Expired / Lapsed
US
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Moisture-sensitive element
Assignee: Phillips Petroleum Co
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Filing: 1951-11-09
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Granted: 1955-02-08
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Expires: 1971-11-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Ross S Marsden
- 👤 Boisblanc Deslonde R De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:49
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/12; G01N27/121
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
A MOISTURE-SENSIVE ELEMENT AS AN ARTICLE OF MANUFACTURE, COMPRISING A NON-HYGROSCOPIC INSULATING SUPPORT MEMBER, A COATING OF COLLOIDAL GRAPHITE ON A SURFACE OF SAID SUPPORT MEMBER, AND CONDUCTOR LEADS AFFIXED IN CONTACT WITH SAID COATING AT SEPARATE POINTS THEREON.
Claim 2
Dependent Claim
39 words
A MOISTURE-SENSIVE ELEMENT AS AN ARTICLE OF MANUFACTURE, COMPRISING A NON-HYGROSCOPIC INSULATING SUPPORT MEMBER, A COATING OF COLLOIDAL GRAPHITE ON A SURFACE OF SAID SUPPORT MEMBER, AND CONDUCTOR LEADS AFFIXED IN CONTACT WITH SAID COATING AT SEPARATE POINTS THEREON.
References Cited (Backward Citations)
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US2609688A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-07 | 1958-08-09 | 1959-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-07 | 1962-08-09 | 1963-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-07 | 1966-08-09 | 1967-02-08 | $7700.00 | Window Closed / Lapsed |