Patent US3117882A successfully refreshed from Google Patents.
US3117882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for coloring inorganic cementitious materials
Assignee: Harshaw Chemical Co
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Filing: 1960-11-07
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Granted: 1964-01-14
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Expires: 1980-11-07
Abstract
No abstract record available.
Inventors
- 👤 Robert J Herschler
- 👤 Rainer G Jaffe
- 👤 James W Kay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:36
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B24/00; C04B24/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A PROCESS FOR COLORING INORGANIC, FINELY DIVIDED, CEMENTITIOUS MATERIAL WHICH COMPRISES INCORPORATING INTO SUCH MATERIAL COLORING PIGMENT AND A DIALKYL SULFOXIDE IN AN AMOUNT SUFFICIENT TO PRODUCE A SUBSTANTIALLY UNIFORM DISTRIBUTION OF THE PIGMENT THROUGHOUT SAID MATERIAL.
Claim 2
Dependent Claim
37 words
A PROCESS FOR COLORING INORGANIC, FINELY DIVIDED, CEMENTITIOUS MATERIAL WHICH COMPRISES INCORPORATING INTO SUCH MATERIAL COLORING PIGMENT AND A DIALKYL SULFOXIDE IN AN AMOUNT SUFFICIENT TO PRODUCE A SUBSTANTIALLY UNIFORM DISTRIBUTION OF THE PIGMENT THROUGHOUT SAID MATERIAL.
References Cited (Backward Citations)
US1972207A
Cited
US1972208A
Cited
US2069774A
Cited
US2654667A
Cited
US2927862A
Cited
US2787595A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-13 | 1967-07-15 | 1968-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-13 | 1971-07-15 | 1972-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-13 | 1975-07-15 | 1976-01-14 | $7700.00 | Window Closed / Lapsed |