Patent US2573253A successfully refreshed from Google Patents.
US2573253A
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Process for producing cupric ammonium borate solutions
Assignee: Timber Engineering Co
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Filing: 1950-06-21
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Granted: 1951-10-30
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Expires: 1970-06-21
Abstract
No abstract record available.
Inventors
- 👤 Farber Eduard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:04
CPC Classifications
C; C01; C01B; C01B35/00; C01B35/08; C01B35/10; C01B35/06; C01B35/12; C01G; C01G3/00; C01G3/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A PROCESS FOR THE PRODUCTION OF CUPRIC AMMONIUM BORATE SOLUTION WHICH COMPRISES CONTACTING WITH A FREE OXYGEN CONTAININ GAS, AT A TEMPERATURE OF FROM ABOUT 5* C. TO ABOUT 40* C. AN AQUEOUS AMMONICAL BORIC ACID SOLUTION HAVING METALLIC COPPER IN CONTACT THEREWITH, SAID AQUEOUS AMMONIACAL BORIC ACID SOLUTION CONTAINING FROM ABOUT 1 TO 4 EQUIVALENTS FO DISSOLVED AMMONIA PER LITER AND AT LEAST ABOUT 0.25 EQUIVALENTS OF DISSOLVED BORIC ACID PER EQUIVALENT OF DISSOLVED AMMONIA, SAID SOLUTION CONTAINING NO MORE THAN ABOUT 2.5 EQUIVALENTS OF BORIC ACID PER LITER, SAID METALLIC COPPER BEING PRESENT IN STOICHIOMETRIC EXCESS THROUGHOUT THE REACTION SAID FREE OXYGEN CONTAINING GAS BEING SUPPLIED AT A RATE ADEQUATE TO PROVIDE, AT ALL TIMES, AN EXCESS OF FREE OXYGEN IN THE REACTION MIXTURE.
Claim 2
Dependent Claim
126 words
A PROCESS FOR THE PRODUCTION OF CUPRIC AMMONIUM BORATE SOLUTION WHICH COMPRISES CONTACTING WITH A FREE OXYGEN CONTAININ GAS, AT A TEMPERATURE OF FROM ABOUT 5* C. TO ABOUT 40* C. AN AQUEOUS AMMONICAL BORIC ACID SOLUTION HAVING METALLIC COPPER IN CONTACT THEREWITH, SAID AQUEOUS AMMONIACAL BORIC ACID SOLUTION CONTAINING FROM ABOUT 1 TO 4 EQUIVALENTS FO DISSOLVED AMMONIA PER LITER AND AT LEAST ABOUT 0.25 EQUIVALENTS OF DISSOLVED BORIC ACID PER EQUIVALENT OF DISSOLVED AMMONIA, SAID SOLUTION CONTAINING NO MORE THAN ABOUT 2.5 EQUIVALENTS OF BORIC ACID PER LITER, SAID METALLIC COPPER BEING PRESENT IN STOICHIOMETRIC EXCESS THROUGHOUT THE REACTION SAID FREE OXYGEN CONTAINING GAS BEING SUPPLIED AT A RATE ADEQUATE TO PROVIDE, AT ALL TIMES, AN EXCESS OF FREE OXYGEN IN THE REACTION MIXTURE.
References Cited (Backward Citations)
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US1057076A
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US1620152A
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FR782795A
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GB446373A
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US2149284A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-29 | 1955-04-30 | 1955-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-29 | 1959-04-30 | 1959-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-29 | 1963-04-30 | 1963-10-30 | $7700.00 | Window Closed / Lapsed |