US3056773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyhalo carboxylic acids
Assignee: Pure Oil Co
•
Filing: 1960-08-18
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Granted: 1962-10-02
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Expires: 1980-08-18
Abstract
No abstract record available.
Inventors
- 👤 Louis A Joo
- 👤 Walter E Kramer
- 👤 Theodore H Szawlowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:19
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/347; C07C51/363
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
HALO, POLYNUCLEAR CARBOXYLIC ACIDS PREPARED BY REACTING SOLVENT EXTRACTS, OBTAINED IN SOLVENT REFINING OF MINERAL LUBRICATING OILS WITH A SOLVENT SELECTIVE FOR AROMATIC COMPOUNDS, WITH AN ALKALI METAL TO FORM THE ALKALI METAL ADDUCT, CARBONATING SAID ADDUCT TO FORM THE ALKALI METAL SALT OF SAID ACIDS, ACIDIZING THE RESULTING SALT TO FORM THE FREE CARBOXYLIC ACIDS AND HALOGENATING SAID FREE ACIDS.
Claim 2
Dependent Claim
61 words
HALO, POLYNUCLEAR CARBOXYLIC ACIDS PREPARED BY REACTING SOLVENT EXTRACTS, OBTAINED IN SOLVENT REFINING OF MINERAL LUBRICATING OILS WITH A SOLVENT SELECTIVE FOR AROMATIC COMPOUNDS, WITH AN ALKALI METAL TO FORM THE ALKALI METAL ADDUCT, CARBONATING SAID ADDUCT TO FORM THE ALKALI METAL SALT OF SAID ACIDS, ACIDIZING THE RESULTING SALT TO FORM THE FREE CARBOXYLIC ACIDS AND HALOGENATING SAID FREE ACIDS.
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) | 1965-10-01 | 1966-04-02 | 1966-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-01 | 1970-04-02 | 1970-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-01 | 1974-04-02 | 1974-10-02 | $7700.00 | Window Closed / Lapsed |