US3375265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of trialkoxyboroxine
Assignee: Shell USA Inc
•
Filing: 1965-09-07
•
Granted: 1968-03-26
•
Expires: 1985-09-07
Abstract
No abstract record available.
Inventors
- 👤 Lloyd C Fetterly
- 👤 George W Conklin
- 👤 Kenneth F Koetitz
- 👤 Friedrich G Helfferich
- 👤 Peter W Gilderson
- 👤 Stanley F Newman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:57
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/48; C07C29/50; C07C29/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
THE PROCESS OF PRODUCING TRIALKOXYBOROXINE CONTAINING ALKOXY RADICALS OF AT LEAST 4 CARBON ATOMS BY PARTIALLY HYDROLYZING TRIALKYL JORTHO BORATE ESTER, WHEREIN THE ALKYL IS OF AT LEAST 4 CARBON ATOMS, IN LIQUID PHASE AT ABOUT 130 TO ABOUT 225*C. IN THE PRESENCE OF WATER VAPOR AT A PARTIAL PRESSURE NO GREATER THAN 250 MM. HG.
Claim 2
Dependent Claim
56 words
THE PROCESS OF PRODUCING TRIALKOXYBOROXINE CONTAINING ALKOXY RADICALS OF AT LEAST 4 CARBON ATOMS BY PARTIALLY HYDROLYZING TRIALKYL JORTHO BORATE ESTER, WHEREIN THE ALKYL IS OF AT LEAST 4 CARBON ATOMS, IN LIQUID PHASE AT ABOUT 130 TO ABOUT 225*C. IN THE PRESENCE OF WATER VAPOR AT A PARTIAL PRESSURE NO GREATER THAN 250 MM. HG.
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) | 1971-03-26 | 1971-09-25 | 1972-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-26 | 1975-09-25 | 1976-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-26 | 1979-09-25 | 1980-03-26 | $7700.00 | Window Closed / Lapsed |