US2750433A
Expired / Lapsed
US
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Hydrocarbon analysis and control in crystallization processes
Assignee: California Research LLC
•
Filing: 1951-03-20
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Granted: 1956-06-12
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Expires: 1971-03-20
Abstract
No abstract record available.
Inventors
- 👤 Tourneau Robert L Le
- 👤 Matteson Robert
- 👤 Waithman Victor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:12
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/14; G01N25/147; Y; Y10; Y10S; Y10S585/00; Y10S585/949; Y10S585/956
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) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |