US3701635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe connector for the interior of reaction vessels
Assignee: ThyssenKrupp Industrial Solutions AG
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Filing: 1970-11-03
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Granted: 1972-10-31
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Expires: 1990-11-03
Abstract
Abstract IN A REACTION VESSEL, FOR EXAMPLE AND AMMONIA SYNTHEISIS CONVERTER, A DETACHABLE PIPE CONNECTOR FOR THE REACTION SECTIONS THAT ARE FILLED WITH CATALYST, AND A NUMBER OF INTERMEDIATE HEAT EXCHANGERS, AND WHICH ENSURES AT ALL TIMES, DESPITE THERMAL EXPANSION, THE NECESSARY GASTIGHTNESS, BUT AT THE SAME TIME AFFORDS ACCESSIBILITY TO THE CATALYST BEDS.
Inventors
- 👤 Herbert Staarmann
- 👤 Hans-Gunter Brieke
- 👤 Dirk Gerdes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:29
CPC Classifications
F; F16; F16L; F16L51/00; F16L51/02; F16L51/025; B; B01; B01J; B01J3/00; B01J3/002; B01J8/00; B01J8/02; C; C01; C01C; C01C1/00; C01C1/02; C01C1/04; C01C1/0405; C01C1/0417; F16L27/00; F16L27/12; F16L5/00; F16L5/02; F16L5/08; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
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) | 1975-10-31 | 1976-05-01 | 1976-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-31 | 1980-05-01 | 1980-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-31 | 1984-05-01 | 1984-10-31 | $7700.00 | Window Closed / Lapsed |