US2556902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stencil duplicating inks
Assignee: AB Dick Co
•
Filing: 1949-04-16
•
Granted: 1951-06-12
•
Expires: 1969-04-16
Abstract
No abstract record available.
Inventors
- 👤 Chambers Thomas Seal
- 👤 Florence Robert Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:06
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
93 words
A STENCIL DUPLICATING INK COMPRISING AN AQUEOUS COMPOSITION CONSISTING ESSENTIALLY OF WATER AS THE DILUENT, A TINCTORIAL AGENT SELECTED FROM THE GROUP CONSISTING OF WATER SOLUBLE DYES, WATER DISPERSIBLE PIGMENTS AND MIXTURES THEREOF, A WETTING AGENT, A WATER SOLUBLE HYDROXY REINOUS MATERIAL TO BODY OF THE COMPOSITION AND TO OPERATE AS AN ADHERENT BASE UPON DRYING, AND A LIQUID POLYHYDRIC ALCOHOL SOLUBLE IN THE SOLUTION OF WATER AND THE RESINOUS MATERIAL AND PRESENT IN AMOUNTS SUFFICIENT TO IMPART FALSE BODY TO THE COMPOSITION WITHOUT AFFECTING THE STRUCTURE AND STABILITY OF THE COLLOID COMPOSITION.
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) | 1954-06-11 | 1954-12-11 | 1955-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-11 | 1958-12-11 | 1959-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-11 | 1962-12-11 | 1963-06-12 | $7700.00 | Window Closed / Lapsed |