US2908595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating and grinding method of making a humidity sensor
Assignee: General Mills Inc
•
Filing: 1955-11-25
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Granted: 1959-10-13
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Expires: 1975-11-25
Abstract
No abstract record available.
Inventors
- 👤 Douglas A Kohl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:49
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/12; G01N27/121; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A METHOD OF MAKING A HUMIDITY SENSOR COMPRISING THE STEPS OF ETCHING ONE SURFACE OF AN INERT ELEMENT OF HIGH ADSORPTIVITY AND HAVING A HIGH ELECTRICAL RESISTIVITY, APPLYING A METALLIC LAYER TO SAID SURFACE, REMOVING A PORTION OF SAID SURFACE AND THE OVERLYING METALLIC LAYER TO PROVIDE A PREFERRED RESISTIVITY SO THAT SUBSTANTIALLY FLAT PLATEAUS BARREN OF METAL ARE FORMEDHAVING METALLIC LINED RECESSES THEREBETWEEN, AND APPLYING INTERLEAVED METALLIC GRIDS TO SAID SURFACE.
Claim 2
Independent Claim
72 words
A METHOD OF MAKING A HUMIDITY SENSOR COMPRISING THE STEPS OF ETCHING ONE SURFACE OF AN INERT ELEMENT OF HIGH ADSORPTIVITY AND HAVING A HIGH ELECTRICAL RESISTIVITY, APPLYING A METALLIC LAYER TO SAID SURFACE, REMOVING A PORTION OF SAID SURFACE AND THE OVERLYING METALLIC LAYER TO PROVIDE A PREFERRED RESISTIVITY SO THAT SUBSTANTIALLY FLAT PLATEAUS BARREN OF METAL ARE FORMEDHAVING METALLIC LINED RECESSES THEREBETWEEN, AND APPLYING INTERLEAVED METALLIC GRIDS TO SAID SURFACE.
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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) | 1962-10-12 | 1963-04-13 | 1963-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-12 | 1967-04-13 | 1967-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-12 | 1971-04-13 | 1971-10-13 | $7700.00 | Window Closed / Lapsed |