Patent US3030406A successfully refreshed from Google Patents.
US3030406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aliphatic boronic acids and esters
Assignee: Individual
•
Filing: 1958-10-08
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Granted: 1962-04-17
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Expires: 1978-10-08
Abstract
No abstract record available.
Inventors
- 👤 Robert M Washburn
- 👤 Franklin A Billig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:45
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/02; C07F5/025; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/30; C10L1/301; C10L1/303
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
99 words
A PROCESS FOR PREPARING AN ALIPHATIC POLYBORONIC ACID COMPRISING REACTING A COMPOUND OF THE FORMULA R"(NA)N, WHERE N IS AN INTEGER OF 2 TO 4 AND R" IS SELECTED FROM THE CLASS CONSISTING OF METHYLENE, A POLYMETHYLENE RADICAL HAVING 2 TO 10 CARBON ATOMS AND PENTAERYTHRITYL, WITH A COMPOUND OF THE GENERAL FORMULA (R''O)3B, WHERE R'' IS SELECTED FROM THE CLASS CONSISTING OF PHENYL AND LOWER ALKYL, AT LEAST ABOUT ONE MOLE OF SAID BORATE ESTER BEING PROVIDED FOR EACH MOLE OF SODIUM, WHEREBY TO YIELD A POLYBORONIC ACID ESTER, AND HYDROLYZING THE SAID ESTER TO THE SAID ACID.
Claim 2
Dependent Claim
99 words
A PROCESS FOR PREPARING AN ALIPHATIC POLYBORONIC ACID COMPRISING REACTING A COMPOUND OF THE FORMULA R"(NA)N, WHERE N IS AN INTEGER OF 2 TO 4 AND R" IS SELECTED FROM THE CLASS CONSISTING OF METHYLENE, A POLYMETHYLENE RADICAL HAVING 2 TO 10 CARBON ATOMS AND PENTAERYTHRITYL, WITH A COMPOUND OF THE GENERAL FORMULA (R''O)3B, WHERE R'' IS SELECTED FROM THE CLASS CONSISTING OF PHENYL AND LOWER ALKYL, AT LEAST ABOUT ONE MOLE OF SAID BORATE ESTER BEING PROVIDED FOR EACH MOLE OF SODIUM, WHEREBY TO YIELD A POLYBORONIC ACID ESTER, AND HYDROLYZING THE SAID ESTER TO THE SAID ACID.
Claim 3
Dependent Claim
13 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS OF THE GENERAL FORMULAE
Claim 4
Dependent Claim
13 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS OF THE GENERAL FORMULAE
References Cited (Backward Citations)
US2402590A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |