US2949377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transfer composition containing a triphenylcarbinol compound and precipitated calcium carbonate
Assignee: Individual
•
Filing: 1957-10-30
•
Granted: 1960-08-16
•
Expires: 1977-10-30
Abstract
No abstract record available.
Inventors
- 👤 Steinhardt Amos
- 👤 Franklin A Goldwater
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:38
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; B41M5/025; B41M5/0253
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A COMPOSITION OF MATTER ADAPTED FOR USE AS A COLORING AGENT FOR A TRANSFER DUPLICATING PROCESS, COMPRISING A MIXTURE OF A COLORLESS DYE INTERMEDIATE TRIPHENYLCARBINOL COMPOUND CAPABLE OF BEING CONVERTED TO A COLORED FROM BY CONTACT WITH AN ACID, A WAX ALIPHATIC PRIMARY AMINE, AND FINELY DIVIDED PRECIPITATED CALCIUM CARBONATE, IN A MINOR AMOUNT SUFFICENT TO ASSIST IN TRANSFER OF THE COMPOSITION WITHOUT UNDESIRABLE DILUTION THEREOF.
Claim 2
Dependent Claim
66 words
A COMPOSITION OF MATTER ADAPTED FOR USE AS A COLORING AGENT FOR A TRANSFER DUPLICATING PROCESS, COMPRISING A MIXTURE OF A COLORLESS DYE INTERMEDIATE TRIPHENYLCARBINOL COMPOUND CAPABLE OF BEING CONVERTED TO A COLORED FROM BY CONTACT WITH AN ACID, A WAX ALIPHATIC PRIMARY AMINE, AND FINELY DIVIDED PRECIPITATED CALCIUM CARBONATE, IN A MINOR AMOUNT SUFFICENT TO ASSIST IN TRANSFER OF THE COMPOSITION WITHOUT UNDESIRABLE DILUTION THEREOF.
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) | 1963-08-16 | 1964-02-15 | 1964-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-16 | 1968-02-15 | 1968-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-16 | 1972-02-15 | 1972-08-16 | $7700.00 | Window Closed / Lapsed |