US3075385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hygrometer
Assignee: Individual
•
Filing: 1960-12-15
•
Granted: 1963-01-29
•
Expires: 1980-12-15
Abstract
No abstract record available.
Inventors
- 👤 Clifford M Stover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:16
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/12; G01N27/121
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
THE METHOD OF MANUFACTURING A HUMIDITY SENSING ELEMENT WHICH COMPRISES PROVIDING A SUBSTANTIALLY PURE METAL BASE HAVING ELECTRICAL CONDUCTING PROPERTIES, IMMERSING SAID BASE FOR A PREDETERMINED TIM INTO AN ACID SOLUTION, HEATING SAID SOLUTION, PASSING AN ALTERNATING CURRENT, THROUGH SAID SOLUTION TO FORM AN OXIDE COATING ON SAID BASE, THEREAFTER SUBMERGING THE OXIDIZED BASE INTO BOILING WATER, COVERING AN OXIDIZED PORTON OF SAID BASE WITH A SEALING SOLUTION TO ISOLATE SAID PORTON FORM HUMIDITY, ATTACHING ELECTRICAL CONTACT MEANS HAVING AT LEAST ONE CONTACT TO THE SEALED PORTON OF SAID BASE, EVAPORATIVELY DEPOSITING A FILM OF METAL TAKEN FROM THE GROUP CONSISTING OF ALUMINUM, GOL, PLATINUM, IRON AND COPPER ON A PORTION OF SAID BASE FREE OF SAID SEALING SOLUTION, ESTABLISHING AND ELECTRICAL CONNECTION BETWEEN SAID FILM AND SAID CONTACT, AND ELECTRICALLY CONNECTING SAID BASE TO SAID CONTACT MEANS.
Claim 2
Independent Claim
138 words
THE METHOD OF MANUFACTURING A HUMIDITY SENSING ELEMENT WHICH COMPRISES PROVIDING A SUBSTANTIALLY PURE METAL BASE HAVING ELECTRICAL CONDUCTING PROPERTIES, IMMERSING SAID BASE FOR A PREDETERMINED TIM INTO AN ACID SOLUTION, HEATING SAID SOLUTION, PASSING AN ALTERNATING CURRENT, THROUGH SAID SOLUTION TO FORM AN OXIDE COATING ON SAID BASE, THEREAFTER SUBMERGING THE OXIDIZED BASE INTO BOILING WATER, COVERING AN OXIDIZED PORTON OF SAID BASE WITH A SEALING SOLUTION TO ISOLATE SAID PORTON FORM HUMIDITY, ATTACHING ELECTRICAL CONTACT MEANS HAVING AT LEAST ONE CONTACT TO THE SEALED PORTON OF SAID BASE, EVAPORATIVELY DEPOSITING A FILM OF METAL TAKEN FROM THE GROUP CONSISTING OF ALUMINUM, GOL, PLATINUM, IRON AND COPPER ON A PORTION OF SAID BASE FREE OF SAID SEALING SOLUTION, ESTABLISHING AND ELECTRICAL CONNECTION BETWEEN SAID FILM AND SAID CONTACT, AND ELECTRICALLY CONNECTING SAID BASE TO SAID CONTACT MEANS.
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) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |