US2318688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regenerative furnace for manufacture of acetylene by pyrolysis
Assignee: Eastman Kodak Co
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Filing: 1941-09-18
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Granted: 1943-05-11
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Expires: 1961-09-18
Abstract
No abstract record available.
Inventors
- 👤 Hasche Rudolph Leonard
- 👤 William B Hincke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:00
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/24; C; C07; C07C; C07C4/00; C07C4/02; C07C4/04; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00054; B01J2219/00056; B01J2219/00069; B01J2219/00121; B01J2219/0015; B01J2219/00155; B01J2219/00164; B01J2219/00166; B01J2219/0018; Y; Y10; Y10S; Y10S585/00; Y10S585/919; Y10S585/921; Y10S585/924; Y10S585/925
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) | 1946-05-10 | 1946-11-09 | 1947-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-05-10 | 1950-11-09 | 1951-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-05-10 | 1954-11-09 | 1955-05-11 | $7700.00 | Window Closed / Lapsed |