US3530194A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the catalytic conversion of hydrocarbons with steam
Assignee: Shell USA Inc
•
Filing: 1967-11-08
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Granted: 1970-09-22
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Expires: 1987-11-08
Abstract
No abstract record available.
Inventors
- 👤 Willem C J Quik
- 👤 Pieter A Van Weeren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:01
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/38; C01B3/40; C10; C10G; C10G11/00; C10G11/02; C10G11/10; C10G47/00; C10G47/02; C10G47/10; C10G47/12; C01B2203/00; C01B2203/10; C01B2203/1041; C01B2203/1047; C01B2203/1052
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3449078A
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US3388074A
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US3291850A
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US3413214A
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US3360586A
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US3442793A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-21 | 1974-03-23 | 1974-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-21 | 1978-03-23 | 1978-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-21 | 1982-03-23 | 1982-09-22 | $7700.00 | Window Closed / Lapsed |