US2599093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pigmented cellulose fiber
Assignee: Vanderbilt Chemicals LLC
•
Filing: 1948-03-17
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Granted: 1952-06-03
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Expires: 1968-03-17
Abstract
No abstract record available.
Inventors
- 👤 Craig William Lutton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:16
CPC Classifications
D; D21; D21C; D21C9/00; D21C9/001; D21C9/002; D21C9/004
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
HIGHLY PIGMENTED CELLULOSIC PULP COMPRISING THE DRIED RESIDUE OF SWOLLEN, HYDRATED AND GELATINIZED CELLULOSIC FIBERS AND AN AMOUNT OF FINELYDIVIDED PIGMENT IN EXCESS OF THE DRY WEIGHT OF THE FIBERS, AND NOT EXCEEDING ABOUT 16 TIMES THE WEIGHT OF THE FIBERS, THE PIGMENT BEING SELECTED FROM THE CLASS WHICH CONSISTS OF PRECIPITATED INORGANIC SALTS OF CALCIUM, BARIUM AND ZINC, THE FINELY-DIVIDED PIGMENT BEING LARGELY WITHIN THE CELLULOSIC FIBERS BUT ALSO ON AND AROUND SAID FIBERS, THE FINELY-DIVIDED PIGMENT WITHIN THE FIBERS HAVING BEEN PRECIPITATED IN SITU THEREIN BY REACTION OF ONE SOLUBLE SALT WITH A SECOND SOLUBLE SALT WHILE THE SECOND SOLUBLE SALT IS WITHIN THE FIBERS WHILE THEY ARE IN A SWOLLEN HYDRATED AND GELATINIZED STATE, SAID PIGMENT MATERIAL FORMING A PULP-LIKE MASS ON ADMIXTURE WITH WATER.
Claim 2
Dependent Claim
128 words
HIGHLY PIGMENTED CELLULOSIC PULP COMPRISING THE DRIED RESIDUE OF SWOLLEN, HYDRATED AND GELATINIZED CELLULOSIC FIBERS AND AN AMOUNT OF FINELYDIVIDED PIGMENT IN EXCESS OF THE DRY WEIGHT OF THE FIBERS, AND NOT EXCEEDING ABOUT 16 TIMES THE WEIGHT OF THE FIBERS, THE PIGMENT BEING SELECTED FROM THE CLASS WHICH CONSISTS OF PRECIPITATED INORGANIC SALTS OF CALCIUM, BARIUM AND ZINC, THE FINELY-DIVIDED PIGMENT BEING LARGELY WITHIN THE CELLULOSIC FIBERS BUT ALSO ON AND AROUND SAID FIBERS, THE FINELY-DIVIDED PIGMENT WITHIN THE FIBERS HAVING BEEN PRECIPITATED IN SITU THEREIN BY REACTION OF ONE SOLUBLE SALT WITH A SECOND SOLUBLE SALT WHILE THE SECOND SOLUBLE SALT IS WITHIN THE FIBERS WHILE THEY ARE IN A SWOLLEN HYDRATED AND GELATINIZED STATE, SAID PIGMENT MATERIAL FORMING A PULP-LIKE MASS ON ADMIXTURE WITH WATER.
References Cited (Backward Citations)
US348958A
Cited
US354477A
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GB187300262A
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GB151381A
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US2080437A
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US2189832A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-03 | 1955-12-03 | 1956-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-03 | 1959-12-03 | 1960-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-03 | 1963-12-03 | 1964-06-03 | $7700.00 | Window Closed / Lapsed |