US2738255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of potassium fluoborate
Assignee: American Agricultural Chemical Co
•
Filing: 1954-08-04
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Granted: 1956-03-13
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Expires: 1974-08-04
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Sullivan
- 👤 Charles H Milligan
- 👤 George F Lillquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:53
CPC Classifications
C; C01; C01B; C01B35/00; C01B35/06; C01B35/063; C01B35/066
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
THE PROCESS FOR PRODUCING CRYSTALLINE POTASSIUM FLUOBORATE COMPRISING REACTING IN SOLUTION A WATER-SOLUBLE POTASSIUM SALT WITH FLUOBORIC ACID IN THE PRESENCE OF SEED CRYSTALS OF POTASSIUM FLUOBORIC WHILE MAINTAINING THE MIXTURE IN AGITATION AND AT A TEMPERATURE OF AT LEAST ABOUT 65* C.
Claim 2
Dependent Claim
43 words
THE PROCESS FOR PRODUCING CRYSTALLINE POTASSIUM FLUOBORATE COMPRISING REACTING IN SOLUTION A WATER-SOLUBLE POTASSIUM SALT WITH FLUOBORIC ACID IN THE PRESENCE OF SEED CRYSTALS OF POTASSIUM FLUOBORIC WHILE MAINTAINING THE MIXTURE IN AGITATION AND AT A TEMPERATURE OF AT LEAST ABOUT 65* C.
References Cited (Backward Citations)
CH122509A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-13 | 1959-09-12 | 1960-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-13 | 1963-09-12 | 1964-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-13 | 1967-09-12 | 1968-03-13 | $7700.00 | Window Closed / Lapsed |