US3134640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of chromium oxychloride, crocl
Assignee: Diamond Shamrock Corp
•
Filing: 1961-06-08
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Granted: 1964-05-26
•
Expires: 1981-06-08
Abstract
No abstract record available.
Inventors
- 👤 Frank W Hengeveld
- 👤 Taylor Kirman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:09
CPC Classifications
C; C01; C01G; C01G37/00; C01G37/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
THE PROCESS OF PREPARING CHROMIUM OXYCHLORIDE HAVING THE FORMULA CROCL, WHICH COMPRISES REACTING CHROMIC CHLORIDE WITH OXYGEN FOR ABOUT THREE TO FIVE HOURS, WITH AGITATION, AT A TEMPERATURE OF ABOUT 200* TO 500*C. AND RECOVERING THE CHROMIUM OXYCHLORIDE
Claim 2
Dependent Claim
38 words
THE PROCESS OF PREPARING CHROMIUM OXYCHLORIDE HAVING THE FORMULA CROCL, WHICH COMPRISES REACTING CHROMIC CHLORIDE WITH OXYGEN FOR ABOUT THREE TO FIVE HOURS, WITH AGITATION, AT A TEMPERATURE OF ABOUT 200* TO 500*C. AND RECOVERING THE CHROMIUM OXYCHLORIDE
References Cited (Backward Citations)
CA552983A
Cited
US2684284A
Cited
US2793937A
Cited
US2943081A
Cited
US2935495A
Cited
US2942944A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-26 | 1967-11-25 | 1968-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-26 | 1971-11-25 | 1972-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-26 | 1975-11-25 | 1976-05-26 | $7700.00 | Window Closed / Lapsed |