US3920855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Food containing non-toxic food coloring compositions and a process therefor
Assignee: Dynapol Shareholders Liquidating Trust
•
Filing: 1973-11-30
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Granted: 1975-11-18
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Expires: 1993-11-30
Abstract
Abstract Food containing nontoxic coloring compositions which comprise optically chromophoric groups attached via sulfonamido linkages to nondegradable chemical molecules which substantially prevent their absorption from the gastrointestinal tract and find primary applications as food colors.
Inventors
- 👤 Daniel J Dawson
- 👤 Josef Rudinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:38
CPC Classifications
C; C09; C09B; C09B69/00; C09B69/10; A; A23; A23L; A23L5/00; A23L5/40; A23L5/42; A23L5/47; Y; Y10; Y10S; Y10S534/00; Y10S534/03
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
28 words
A FOODSTUFF HAVING ADMIXED THEREWITH A COLOR-IMPARTING AMOUNT IN THE RANGE OF FROM 1 TO 20,000 PARTS PER MILLION, BASIS FOODSTUFF, OF A COLORING COMPOSITION HAVING THE FORMULA
Claim 2
Dependent Claim
28 words
A FOODSTUFF HAVING ADMIXED THEREWITH A COLOR-IMPARTING AMOUNT IN THE RANGE OF FROM 1 TO 20,000 PARTS PER MILLION, BASIS FOODSTUFF, OF A COLORING COMPOSITION HAVING THE FORMULA
Claim 3
Dependent Claim
19 words
The foodstuff of claim 1, wherein R is hydrogen and z has a value of from 10 to 5,000.
Claim 4
Dependent Claim
16 words
The foodstuff of claim 2, wherein K is the optically chromophoric group represented by the formula
Claim 5
Dependent Claim
16 words
The foodstuff of claim 2, wherein K is the optically chromophoric group represented by the formula
Claim 6
Dependent Claim
16 words
The foodstuff of claim 2, wherein K is the optically chromophoric group represented by the formula
Claim 7
Dependent Claim
27 words
The process for nontoxically coloring a foodstuff which comprises admixing with said foodstuff from 50 to 10,000 ppm, basis foodstuff, of a coloring composition having the formula
Claim 8
Dependent Claim
27 words
The process for nontoxically coloring a foodstuff which comprises admixing with said foodstuff from 50 to 10,000 ppm, basis foodstuff, of a coloring composition having the formula
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-17 | 1979-05-19 | 1979-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-17 | 1983-05-19 | 1983-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-17 | 1987-05-19 | 1987-11-18 | $7700.00 | Window Closed / Lapsed |