US2906649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-resistant electric insulation and method of manufacture
Assignee: Siemens Schuckertwerke AG
•
Filing: 1956-04-06
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Granted: 1959-09-29
•
Expires: 1976-04-06
Abstract
No abstract record available.
Inventors
- 👤 Keuth Heinz
- 👤 Rotter Hans-Werner
- 👤 Guillery Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:14
CPC Classifications
C; C04; C04B; C04B14/00; C04B14/02; C04B14/04; C04B14/20; H; H01; H01B; H01B3/00; H01B3/02; H01B3/04; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/06; H01G4/08; H01G4/12; H01G4/1209; Y; Y10; Y10S; Y10S428/00; Y10S428/90; Y10T; Y10T428/00; Y10T428/25; Y10T428/251; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
THE METHOD OF PRODUCING UPON A METALLIC SURFACE STRUCTURE A THIN VARNISH-LIKE, HEAT-RESISTANT AND ELECTRICALLY INSULATING, INORGANIC COATING HAVING GOOD COHERNECE WITHOUT AN ADDITIONAL BINDING AGENT, COMPRISING THE STEPS OF PARTIALLY CALCINING A MICA-GROUP MINERAL BY HEATING TO A TEMPERATURE AND FOR A LENGTH OF TIME SUFFICIENT TO EXPEL ONLY A PART, BUT A MAJOR PART, OF ITS WATER OF CRYSTALLIZATION, MECHANICALLY COMMINUTING SAID MINERAL WITHIN AN AQUEOUS LIQUID WHICH IS WEAKLY ACID WITH A PH OF AP-
Claim 2
Independent Claim
78 words
THE METHOD OF PRODUCING UPON A METALLIC SURFACE STRUCTURE A THIN VARNISH-LIKE, HEAT-RESISTANT AND ELECTRICALLY INSULATING, INORGANIC COATING HAVING GOOD COHERNECE WITHOUT AN ADDITIONAL BINDING AGENT, COMPRISING THE STEPS OF PARTIALLY CALCINING A MICA-GROUP MINERAL BY HEATING TO A TEMPERATURE AND FOR A LENGTH OF TIME SUFFICIENT TO EXPEL ONLY A PART, BUT A MAJOR PART, OF ITS WATER OF CRYSTALLIZATION, MECHANICALLY COMMINUTING SAID MINERAL WITHIN AN AQUEOUS LIQUID WHICH IS WEAKLY ACID WITH A PH OF AP-
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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) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |