US2976188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a humidity senser
Assignee: General Mills Inc
•
Filing: 1955-11-25
•
Granted: 1961-03-21
•
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
2026-10-24 03:35
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/048; G01N27/12; G01N27/121; Y; Y10; Y10S; Y10S428/00; Y10S428/913
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A METHOD OF MAKING A HUMIDITY SENSOR COMPRISING THE STEPS OF APPLYING INTERLEAVED METALLIC GRIDS TO ONE SURFACE OF AN ADSORBING ELEMENT, EVAPORATING METAL THROUGH A MASK HAVING A PLURALITY OF RELATIVELY SMALL OPENINGS THEREIN SO AS TO FORM A PLURALITY OF METALLIC ISLANDS ON SAID ADSORBING SURFACE, EVAPORATING HYDROPHOBIC MATERIAL THROUGH SAID SAME MASK WITHOUT DISPLACING SAID MASK FROM THE POSITION ASSUMED DURING THE FORMATION OF THE ISLANDS SO AS TO PRODUCE A PLURALITY OF SUPERIMPOSED HYDROPHOBIC AREAS ON SAID ISLANDS, AND ETCHEING THE ADSORBING SURFACE INTERMEDIATE SAID ISLANDS, THE SECOND EVAPORATING AND ETCHING STEPS BEING PERFORMED IN ANY DESIRED SEQUENCE.
Claim 2
Independent Claim
102 words
A METHOD OF MAKING A HUMIDITY SENSOR COMPRISING THE STEPS OF APPLYING INTERLEAVED METALLIC GRIDS TO ONE SURFACE OF AN ADSORBING ELEMENT, EVAPORATING METAL THROUGH A MASK HAVING A PLURALITY OF RELATIVELY SMALL OPENINGS THEREIN SO AS TO FORM A PLURALITY OF METALLIC ISLANDS ON SAID ADSORBING SURFACE, EVAPORATING HYDROPHOBIC MATERIAL THROUGH SAID SAME MASK WITHOUT DISPLACING SAID MASK FROM THE POSITION ASSUMED DURING THE FORMATION OF THE ISLANDS SO AS TO PRODUCE A PLURALITY OF SUPERIMPOSED HYDROPHOBIC AREAS ON SAID ISLANDS, AND ETCHEING THE ADSORBING SURFACE INTERMEDIATE SAID ISLANDS, THE SECOND EVAPORATING AND ETCHING STEPS BEING PERFORMED IN ANY DESIRED SEQUENCE.
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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) | 1964-03-20 | 1964-09-19 | 1965-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-20 | 1968-09-19 | 1969-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-20 | 1972-09-19 | 1973-03-21 | $7700.00 | Window Closed / Lapsed |