US2787607A
Expired / Lapsed
US
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Bis (2-hydroxy-3-benzoyl phenyl) methanes and compositions containing the same
Assignee: Dow Chemical Co
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Filing: 1955-11-03
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Granted: 1957-04-02
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Expires: 1975-11-03
Abstract
No abstract record available.
Inventors
- 👤 Carl B Havens
- 👤 John R Mathieson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:09
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/51; C07C45/54; C07C49/00; C07C49/76; C07C49/82; C07C49/83; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/132
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
AS A NEW ORGANIC COMPOUND, A BIS(2-HYDROXY-3BENZOYL PHENYL) METHANE HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
13 words
AS A NEW ORGANIC COMPOUND, A BIS(2-HYDROXY-3BENZOYL PHENYL) METHANE HAVING THE GENERAL FORMULA:
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-01 | 1960-10-01 | 1961-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-01 | 1964-10-01 | 1965-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-01 | 1968-10-01 | 1969-04-02 | $7700.00 | Window Closed / Lapsed |