US2669554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating cashew nut shell liquid with fluoboric acid
Assignee: COLLOID CHEMICAL LAB Inc
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Filing: 1952-06-18
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Granted: 1954-02-16
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Expires: 1972-06-18
Abstract
No abstract record available.
Inventors
- 👤 Clifford F Armitage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:44
CPC Classifications
C; C09; C09F; C09F5/00; C09F5/02; C09F5/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
THE METHOD WHICH COMPRISES MIXING FROM ABOUT 0.25 TO 2.50% BY WEIGHT OF FLUOBORIC ACID IN AQUEOUS SOLUTION WITH CASHEW NUT SHELL LIQUID AND HEATING THE MIXTURE.
Claim 2
Independent Claim
27 words
THE METHOD WHICH COMPRISES MIXING FROM ABOUT 0.25 TO 2.50% BY WEIGHT OF FLUOBORIC ACID IN AQUEOUS SOLUTION WITH CASHEW NUT SHELL LIQUID AND HEATING THE MIXTURE.
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) | 1957-02-15 | 1957-08-17 | 1958-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-15 | 1961-08-17 | 1962-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-15 | 1965-08-17 | 1966-02-16 | $7700.00 | Window Closed / Lapsed |