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Patent US3434807A successfully refreshed from Google Patents.
US3434807A
Expired / Lapsed
US
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Reactor with heat exchanger
Assignee: Individual
•
Filing: 1967-07-20
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Granted: 1969-03-25
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Expires: 1987-07-20
Abstract
No abstract record available.
Inventors
- 👤 Guenther Ibing
- 👤 Hermann Schirrmacher
- 👤 Herbert Vollmer
- 👤 Josef Boemelburg
- 👤 Fritz Schwall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:39
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/69; C01B17/74; C01B17/76; C01B17/80; C01B17/803; B; B01; B01J; B01J8/00; B01J8/02; B01J8/06; B01J8/067; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00106; B01J2208/00168; B01J2208/00212; B01J2208/00256
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) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |