Patent US3377402A successfully refreshed from Google Patents.
US3377402A
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Process for cracking hydrocarbons with an electric arc
Assignee: Knapsack AG
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Filing: 1965-07-30
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Granted: 1968-04-09
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Expires: 1985-07-30
Abstract
No abstract record available.
Inventors
- 👤 Sennewald Kurt
- 👤 Bender Ludwig
- 👤 Gehrmann Klaus
- 👤 Kallrath Heinrich
- 👤 Peantek Gunter
- 👤 Schallus Erich
- 👤 Stephan Hans-Werner
- 👤 Strie Lothar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:12
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/342; C10; C10G; C10G15/00; C10G15/12; C10G47/00; C10G9/00; C10G9/34; C10G9/36; Y; Y10; Y10S; Y10S585/00; Y10S585/909; Y10S585/911; Y10S585/913; Y10S585/919; Y10S585/921; Y10S585/922; Y10S585/923; Y10S585/949; Y10S585/953; Y10S585/955
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3079325A
Cited
US3217056A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-09 | 1971-10-09 | 1972-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-09 | 1975-10-09 | 1976-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-09 | 1979-10-09 | 1980-04-09 | $7700.00 | Window Closed / Lapsed |