Patent US3498756A successfully refreshed from Google Patents.
US3498756A
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Multiple stage reactor suitable for high pressures
Assignee: Universal Oil Products Co
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Filing: 1966-05-26
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Granted: 1970-03-03
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Expires: 1986-05-26
Abstract
No abstract record available.
Inventors
- 👤 Don B Carson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:33
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/02; B01J8/04; B01J8/0446; B01J8/0476; B01J8/048; B01J8/0005; C; C10; C10G; C10G49/00; C10G49/002; B01J2219/00; B01J2219/19; B01J2219/194; B01J2219/1941; B01J2219/1942; Y; Y10; Y10S; Y10S585/00; Y10S585/909; Y10S585/911; Y10S585/919; Y10S585/921; Y10S585/924; Y10S585/949; Y10S585/955
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2148234A
Cited
US2535944A
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US2892262A
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US2996361A
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US3007779A
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US3214247A
Cited
US3208833A
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US3409408A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-02 | 1973-09-01 | 1974-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-02 | 1977-09-01 | 1978-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-02 | 1981-09-01 | 1982-03-03 | $7700.00 | Window Closed / Lapsed |