Patent US2537055A successfully refreshed from Google Patents.
US2537055A
Expired / Lapsed
US
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Aqueous emulsion paints
Assignee: Shell Development Co
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Filing: 1948-09-16
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Granted: 1951-01-09
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Expires: 1968-09-16
Abstract
No abstract record available.
Inventors
- 👤 Hiron Francis Patrick
- 👤 Garner Philip James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:26
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/02; C09D5/022
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
41 words
AN AQUEOUS EMULSION PAINT COMPRISING AN AQUEOUS EMULSION OF A NEUTRALIZED MIXTURE OF SUBSTANTIALLY OIL-FREE NAPHTHENIC ACIDS AND ASSOCIATED FILM-FORMING CONSTITUENTS FROM A NAPHTHENIC ACID-CONTAINING PETROLEUM FRACTION BOILING ABOVE 200* C. AT 0.5 MM. MERCURY PRESSURE, TOGETHER WITH A DISPERSED PIGMENT.
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) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |