US3389189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and equipment for the pyrolysis and synthesis of hydrocarbons and other gasesand arc heater apparatus for use therein
Assignee: Westinghouse Electric Corp
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Filing: 1965-04-06
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Granted: 1968-06-18
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Expires: 1985-04-06
Abstract
No abstract record available.
Inventors
- 👤 Hirayama Chikara
- 👤 George A Kemeny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:56
CPC Classifications
H; H05; H05H; H05H1/00; H05H1/24; H05H1/26; H05H1/32; H05H1/44; C; C07; C07C; C07C2/00; C07C2/76; C07C2/80; H01; H01J; H01J37/00; H01J37/32; H01J37/32009; H01J37/32055; H05B; H05B7/00; H05B7/18; H05B7/185; Y; Y10; Y10S; Y10S585/00; Y10S585/909; Y10S585/911; Y10S585/913
Claims Analysis
Total Claims: 0
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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) | 1971-06-18 | 1971-12-18 | 1972-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-18 | 1975-12-18 | 1976-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-18 | 1979-12-18 | 1980-06-18 | $7700.00 | Window Closed / Lapsed |