Patent US3397228A successfully refreshed from Google Patents.
US3397228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel preparation of boroncontaining compounds
Assignee: Honeywell International Inc
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Filing: 1965-07-06
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Granted: 1968-08-13
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Expires: 1985-07-06
Abstract
No abstract record available.
Inventors
- 👤 Arthur M Brownstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:31
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/02; C07F5/025
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
35 words
A PROCESS FOR THE PREPARATION OF 10-HYDROXY-9-OXA10-BORA ANTHRACENE WHICH COMPRISES REACTING PHENYL ETHER WITH BORON TRIBROMIDE IN THE PRESENCE OF AT LEAST 0.1 MOL OF ALUMINUM DUST PER MOL FO PHENYL ETHER AND THEN HYDROLYZING.
Claim 2
Dependent Claim
35 words
A PROCESS FOR THE PREPARATION OF 10-HYDROXY-9-OXA10-BORA ANTHRACENE WHICH COMPRISES REACTING PHENYL ETHER WITH BORON TRIBROMIDE IN THE PRESENCE OF AT LEAST 0.1 MOL OF ALUMINUM DUST PER MOL FO PHENYL ETHER AND THEN HYDROLYZING.
Claim 3
Dependent Claim
61 words
A PROCESS AS CLAIMED IN CLAIM 1 WHEREIN AT LEAST 2 MOLS OF BORON TRIBROMIDE AND AT LEAST L WHEREIN AT LEAST 2 MOLS OF BORON TRIBROMIDE AND AT LEAST L MOL OF ALUMINUM DUST ARE PRESENT FOR EACH MOL OF PHENYL ETHER AND THE REACTION PRODUCT CONTAINS SUBSTANTIAL PORTIONS OF 4, 4''-PHENONPHENYLDIBORONIC ACID AND 2,4''-PHENOXYPHENYLDIBOARONIC ACID IN ADDITION TO 10-HYDROXY-9-OXA-10-BORA-ANTHRACENE.
Claim 4
Dependent Claim
12 words
AS A NEW COMPOSITION OF MATTER, 4,4''-PHENOXYPHENYLDIBORONIC ACID HAVING THE STRUCTURAL FORMULA,
Claim 5
Dependent Claim
12 words
AS A NEW COMPOSITION OF MATTER, 4,4''-PHENOXYPHENYLDIBORONIC ACID HAVING THE STRUCTURAL FORMULA,
Claim 6
Dependent Claim
12 words
AS A NEW COMPOSITION OF MATTER, 2,4''-PHENOXYPHENYLDIBORONIC ACID HAVING THE STRUCTURAL FORMULA
Claim 7
Dependent Claim
12 words
AS A NEW COMPOSITION OF MATTER, 2,4''-PHENOXYPHENYLDIBORONIC ACID HAVING THE STRUCTURAL FORMULA
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) | 1971-08-13 | 1972-02-12 | 1972-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-13 | 1976-02-12 | 1976-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-13 | 1980-02-12 | 1980-08-13 | $7700.00 | Window Closed / Lapsed |