Patent US2855156A successfully refreshed from Google Patents.
US2855156A
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Process of and apparatus for dispersing pigments in film-forming materials by agitation with sand
Assignee: EIDP Inc
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Filing: 1956-04-05
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Granted: 1958-10-07
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Expires: 1976-04-05
Abstract
No abstract record available.
Inventors
- 👤 Hochberg Seymore
- 👤 Bosse David Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:41
CPC Classifications
B; B02; B02C; B02C17/00; B02C17/16; B01; B01F; B01F27/00; B01F27/80; B01F27/93; C; C09; C09B; C09B67/00; C09B67/0001; C09B67/0002; C09B67/0071; C09B67/0084; C09B67/0091; C09C; C09C3/00; C09C3/04; C09C3/041; B01F27/05; B01F27/11; B01F27/19; B01F27/191; C01; C01P; C01P2006/00; C01P2006/22
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
91 words
IN A PROCESS IN WHICH PIGMENT IS DEAGGLOMERATED AND DISPERSED IN A FILM-FORMING MATERIAL BY MEANS OF AGITATION WITH SAND, THE IMPROVEMENT WHICH COMPRISES CONTINOULSY PASSING A SLURRY OF FILM-FORMING MATERIAL AND PIGMENT TO BE DEAGGLOMERATED AND DISPERSED INTONTHE BOTTOM OF A VERTICAL COLUMNAR BODY CONSISTING ESSENTIALLY OF A UNIFORM MIXTURE OF 20-40 MESH SAND PRESENT IN AMOUNT OF 30-65% BY VOLUME OF THE MIXTURE, PIGMENT AND FILM-FORMING MATERIAL CONTINOUSLY IMPARTING A GENERALLY HORIZONTAL MOTION TO THE SAND PARTICLES THROUGOUT SAID BODY, AND AT THE TOP OF SAID BODY CONTINOUSLY SEPA-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-06 | 1962-04-07 | 1962-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-06 | 1966-04-07 | 1966-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-06 | 1970-04-07 | 1970-10-07 | $7700.00 | Window Closed / Lapsed |