US2581414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for dispersing pigments in film-forming materials
Assignee: EIDP Inc
•
Filing: 1948-08-13
•
Granted: 1952-01-08
•
Expires: 1968-08-13
Abstract
No abstract record available.
Inventors
- 👤 Hochberg Seymore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:02
CPC Classifications
D; D01; D01D; D01D1/00; D01D1/06; D01D1/065; B; B01; B01F; B01F27/00; B01F27/80; B01F27/93; C; C09; C09B; C09B67/00; C09B67/0001; C09B67/0002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
THE METHOD OF DISPERING A COMMERCIAL PIGMENT IN A FILM-FORMING MATERIAL, WHICH COMPRISES AGITATING THE PIGMENT AND FILM-FORMING MATERIAL WITH A SAND WHICH IS OF 20-40 MESH SIZE, AND REMAINS WITHIN ABOUT THIS SIZE RANGE, THE AGITATING BEING CONTINUED UNTIL THE COMMERCIAL SIZE PIGMENT IS REDUCED TO A FINENESS OF NOT MORE THAN 0.0005 INCH WHEN MEASUERD ON A SCRAPE-TYPE FINENESS OF GRIND TESTER THAT IS GRADUATED FROM 0.002 TO 0.000 INCH, AND SEPARATING THE SAND FROM THE DISPERSED PIGMENT AND FILMFORMING MATERIAL.
Claim 2
Independent Claim
83 words
THE METHOD OF DISPERING A COMMERCIAL PIGMENT IN A FILM-FORMING MATERIAL, WHICH COMPRISES AGITATING THE PIGMENT AND FILM-FORMING MATERIAL WITH A SAND WHICH IS OF 20-40 MESH SIZE, AND REMAINS WITHIN ABOUT THIS SIZE RANGE, THE AGITATING BEING CONTINUED UNTIL THE COMMERCIAL SIZE PIGMENT IS REDUCED TO A FINENESS OF NOT MORE THAN 0.0005 INCH WHEN MEASUERD ON A SCRAPE-TYPE FINENESS OF GRIND TESTER THAT IS GRADUATED FROM 0.002 TO 0.000 INCH, AND SEPARATING THE SAND FROM THE DISPERSED PIGMENT AND FILMFORMING MATERIAL.
References Cited (Backward Citations)
US115293A
Cited
US754756A
Cited
US909835A
Cited
US1956293A
Cited
US1837772A
Cited
US1781435A
Cited
US1770430A
Cited
US1794214A
Cited
US2117965A
Cited
US2212641A
Cited
US2386885A
Cited
US2361059A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |