US2813838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boron-adsorbing resin and process for removing boron compounds from fluids
Assignee: Rohm and Haas Co
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Filing: 1955-02-07
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Granted: 1957-11-19
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Expires: 1975-02-07
Abstract
No abstract record available.
Inventors
- 👤 William R Lyman
- 👤 Jr Albert F Preuss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:29
CPC Classifications
C; C01; C01B; C01B35/00; C01B35/08; C01B35/10; B; B01; B01J; B01J41/00; B01J41/08; B01J41/12; B01J41/14; C01B35/06; C01B35/12; C08; C08F; C08F8/00; C08F8/30; C08F2810/00; C08F2810/20; Y; Y10; Y10S; Y10S210/00; Y10S210/902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A RESINOUS PRODUCT CAPABLE OF REMOVING BORON COMPOUNDS FROM SOLUTIONS THEREOF WHICH COMPRISES AN INSOLUBLE CROSS-LINKED COPOLYMER OF A MIXTURE OF AN AROMATIC HYDROCARBON HAVING A VINYL GROUP AS ITS SOLE ALIPHATIC UNSATURATION AND A COPOLYMERIZABLE CROSS-LINKING AGENT WHICH CONTAINS AT LEAST TWO GROUPS OF THE STRUCTURE CH2=C=, SAID CROSS-LINKING AGENT BEING PRESENT IN MOLAR AMOUNTS EQUAL TO 0.5% TO 50% OF SAID AROMATIC MONOVINYL HYDROCARBON, SAID COPOLYMER HAVING ATTACHED TO THE AROMATIC NUCLEI THEREOF GROUPS OF THE STRUCTURE
Claim 2
Dependent Claim
79 words
A RESINOUS PRODUCT CAPABLE OF REMOVING BORON COMPOUNDS FROM SOLUTIONS THEREOF WHICH COMPRISES AN INSOLUBLE CROSS-LINKED COPOLYMER OF A MIXTURE OF AN AROMATIC HYDROCARBON HAVING A VINYL GROUP AS ITS SOLE ALIPHATIC UNSATURATION AND A COPOLYMERIZABLE CROSS-LINKING AGENT WHICH CONTAINS AT LEAST TWO GROUPS OF THE STRUCTURE CH2=C=, SAID CROSS-LINKING AGENT BEING PRESENT IN MOLAR AMOUNTS EQUAL TO 0.5% TO 50% OF SAID AROMATIC MONOVINYL HYDROCARBON, SAID COPOLYMER HAVING ATTACHED TO THE AROMATIC NUCLEI THEREOF GROUPS OF THE STRUCTURE
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) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |