US1703949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for thermally decomposing hydrocarbons
Assignee: ELECTRO METALLURG CO
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Filing: 1927-10-11
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Granted: 1929-03-05
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Expires: 1947-10-11
Abstract
No abstract record available.
Inventors
- 👤 Stanley M Norwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:23
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/02; B01J23/00; B01J23/70; C; C10; C10G; C10G9/00; C10G9/14; C10G9/18; C10G9/20; C10G9/203; B01J2219/00; B01J2219/02; B01J2219/025; B01J2219/0277; Y; Y10; Y10S; Y10S585/00; Y10S585/949; Y10S585/952
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1932-03-04 | 1932-09-03 | 1933-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-03-04 | 1936-09-03 | 1937-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-03-04 | 1940-09-03 | 1941-03-05 | $7700.00 | Window Closed / Lapsed |