US2931831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and product of reacting boric acid with isocyanates
Assignee: Individual
•
Filing: 1957-07-31
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Granted: 1960-04-05
•
Expires: 1977-07-31
Abstract
No abstract record available.
Inventors
- 👤 Robert S Aries
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:06
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/30; C10L1/301; C10L1/303; C07; C07F; C07F5/00; C07F5/02; C07F5/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A PROCESS OF PREPARING TRIAMINO TRISUBSTITUTED DERIVATIVES OF BORON WHICH COMPRISES HEATING 1 MOLE OF BORIC ACID WITH 3 MOLES OF AN ORGANIC MONOISOCYANATE OF THE FORMULA RCNO, WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF ARYL, CYLOALKYL, BUTYL, AND AMYL, AT A TEMPERATURE BETWEEN 90* AND 120*C. IN THE PRESENCE OF A TERTIARY AMINE CATALYST.
Claim 2
Dependent Claim
57 words
A PROCESS OF PREPARING TRIAMINO TRISUBSTITUTED DERIVATIVES OF BORON WHICH COMPRISES HEATING 1 MOLE OF BORIC ACID WITH 3 MOLES OF AN ORGANIC MONOISOCYANATE OF THE FORMULA RCNO, WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF ARYL, CYLOALKYL, BUTYL, AND AMYL, AT A TEMPERATURE BETWEEN 90* AND 120*C. IN THE PRESENCE OF A TERTIARY AMINE CATALYST.
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) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |