US2898192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of boric acid
Assignee: Horizons Inc
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Filing: 1957-05-01
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Granted: 1959-08-04
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Expires: 1977-05-01
Abstract
No abstract record available.
Inventors
- 👤 Cameron G Harman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:02
CPC Classifications
C; C01; C01B; C01B35/00; C01B35/06; C01B35/08; C01B35/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A PROCESS FOR PRODUCING BORIC ACID AND BORIC ACID ANHYDRIDE WHICH CONSISTS OF: MOISTENING AN ALKALINE EARTH BORATE MATERIAL WITH WATER, SUBJECTING THE MOISTENED ALKALINE EARTH BORATE MATERIAL TO TEMPERATURE WITHIN THE RANGE OF 300* F. TO 2000* F. WHILE IN CONTACT WITH WATER VAPOR AND IN THE ABSENCE OF ANY EXTRANEOUS ADDED FREE ACID AND COLLECTING THE BORON OXIDE AND THE BORIC ACID EVOLVED FROM THE HEATED, MOISTENED ALKALINE EARTH BORATE.
Claim 2
Dependent Claim
72 words
A PROCESS FOR PRODUCING BORIC ACID AND BORIC ACID ANHYDRIDE WHICH CONSISTS OF: MOISTENING AN ALKALINE EARTH BORATE MATERIAL WITH WATER, SUBJECTING THE MOISTENED ALKALINE EARTH BORATE MATERIAL TO TEMPERATURE WITHIN THE RANGE OF 300* F. TO 2000* F. WHILE IN CONTACT WITH WATER VAPOR AND IN THE ABSENCE OF ANY EXTRANEOUS ADDED FREE ACID AND COLLECTING THE BORON OXIDE AND THE BORIC ACID EVOLVED FROM THE HEATED, MOISTENED ALKALINE EARTH BORATE.
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) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |