US2810664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for pyrolytic deposition of resistance films
Assignee: International Resistance Co
•
Filing: 1954-05-24
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Granted: 1957-10-22
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Expires: 1974-05-24
Abstract
No abstract record available.
Inventors
- 👤 Gentner Konrad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:48
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/06; H01C17/20; Y; Y10; Y10T; Y10T428/00; Y10T428/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
IN A METHOD OF COATING A CERAMIC BLANK WITH A RESISTANCE MATERIAL BY PYROLYTIC DEPOSITION, THE STEPS OF PACKING A MASS OF CERAMIC BLANKS IN INDISCRIMINATE RANDOM RELATIVELY CONTACTING FASHION WITH SUBSTANTIALLY A MINIMUM TOTAL SPACE THEREBETWEEN BY SHAKING THEM TO FORM A CLOSELY PACKED MASS, PASSING A GASEOUS MIXTURE THROUGH SUCH MASS WHILE MAINTAINING SAID MASS IN THE RELATIVE PACKED CONDITION, SAID MIXTURE COMPRISING AN INERT GAS AND A DEPOSITION GAS WHICH WILL CRACK UPON HEATING TO A DEPOSITION TEMPERATURE, AND HEATING SAID MASS TO SAID DEPOSITION TEMPERATURE TO DEPOSIT BY PYROLYSIS A HARD RESISTANCE COATING ON EACH BLANK.
Claim 2
Dependent Claim
100 words
IN A METHOD OF COATING A CERAMIC BLANK WITH A RESISTANCE MATERIAL BY PYROLYTIC DEPOSITION, THE STEPS OF PACKING A MASS OF CERAMIC BLANKS IN INDISCRIMINATE RANDOM RELATIVELY CONTACTING FASHION WITH SUBSTANTIALLY A MINIMUM TOTAL SPACE THEREBETWEEN BY SHAKING THEM TO FORM A CLOSELY PACKED MASS, PASSING A GASEOUS MIXTURE THROUGH SUCH MASS WHILE MAINTAINING SAID MASS IN THE RELATIVE PACKED CONDITION, SAID MIXTURE COMPRISING AN INERT GAS AND A DEPOSITION GAS WHICH WILL CRACK UPON HEATING TO A DEPOSITION TEMPERATURE, AND HEATING SAID MASS TO SAID DEPOSITION TEMPERATURE TO DEPOSIT BY PYROLYSIS A HARD RESISTANCE COATING ON EACH BLANK.
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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) | 1960-10-21 | 1961-04-22 | 1961-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-21 | 1965-04-22 | 1965-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-21 | 1969-04-22 | 1969-10-22 | $7700.00 | Window Closed / Lapsed |