Patent US3026178A successfully refreshed from Google Patents.
US3026178A
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Preparation of boric oxide and boric acid
Assignee: Callery Chemical Co
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Filing: 1958-10-16
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Granted: 1962-03-20
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Expires: 1978-10-16
Abstract
No abstract record available.
Inventors
- 👤 John L Margrave
- 👤 Sterling P Randall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:44
CPC Classifications
C; C01; C01B; C01B35/00; C01B35/06; C01B35/08; C01B35/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A METHOD OF PRODUCING BORON OXIDE AND BORIC ACID WHICH COMPRISES CONTACTING A METAL BORATE WITH ANHYDROUS HYDROGEN CHLORIDE IN AN AMOUNT SUFFICIENT TO PRODUCE ANHYDROUS AND HYDRATED BORON OXIDES, AT A TEMPERATURE BETWEEN ABOUT 550* C. AND 1400* C., COOLING AND CONDENSING THE EFFLUENT GASES FROM REACTION ZONE, AND RECOVERING THE ANHYDROUS AND HYDRATE OXIDES OF BORON THUS PRODUCED.
Claim 2
Independent Claim
60 words
A METHOD OF PRODUCING BORON OXIDE AND BORIC ACID WHICH COMPRISES CONTACTING A METAL BORATE WITH ANHYDROUS HYDROGEN CHLORIDE IN AN AMOUNT SUFFICIENT TO PRODUCE ANHYDROUS AND HYDRATED BORON OXIDES, AT A TEMPERATURE BETWEEN ABOUT 550* C. AND 1400* C., COOLING AND CONDENSING THE EFFLUENT GASES FROM REACTION ZONE, AND RECOVERING THE ANHYDROUS AND HYDRATE OXIDES OF BORON THUS PRODUCED.
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) | 1965-03-19 | 1965-09-18 | 1966-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-19 | 1969-09-18 | 1970-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-19 | 1973-09-18 | 1974-03-20 | $7700.00 | Window Closed / Lapsed |