US3694237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Edible ink
Assignee: Colorcon Inc
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Filing: 1971-03-17
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Granted: 1972-09-26
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Expires: 1991-03-17
Abstract
Abstract AN EDIBLE INK COMPOSITION FOR APPLYING INDICIA TO A CAPSULE OR TABLET COMPRISING PARTIALLY ESTERIFIED PURIFIED SHELLAC, ETHYL ALCOHOL, AND A COLORING SUBSTANCE SELECTED FROM EDIBLE PIGMENTS, LAKES, AND DYES WHEREIN THE PARTIALLY ESTERIFIED SHELLAC COMPRISES FROM ABOUT 10% TO 50% OF THE TOTAL SHELLAC SOLIDS.
Inventors
- 👤 Chester J Piotrowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:55
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/2072; C; C09; C09D; C09D11/00; C09D11/02; C09D11/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |