US3617183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ethyl auramine solution
Assignee: Wyeth Holdings LLC
•
Filing: 1967-09-27
•
Granted: 1971-11-02
•
Expires: 1987-09-27
Abstract
Abstract Stable ethyl auramine dye solutions containing from 25 to 40 weight percent real dye are provided by the use of ethylene glycol, diethylene glycol, the monomethyl ether of ethylene glycol or the monoethyl ether of ethylene glycol as the solvent vehicle.
Inventors
- 👤 Rill Lewis Grosklos
- 👤 Ralph Eustace Hutcheson
- 👤 Earl Robert Whiston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:05
CPC Classifications
C; C09; C09B; C09B11/00; C09B11/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
17 words
An ethyl auramine dye solution according to Claim 1 containinG a minor amount of a dispersing agent.
Claim 2
Dependent Claim
15 words
An ethyl auramine dye solution according to Claim 1 wherein said solvent is ethylene glycol.
Claim 3
Dependent Claim
15 words
An ethyl auramine dye solution according to Claim 1 wherein the solvent is diethylene glycol.
Claim 4
Dependent Claim
19 words
An ethyl auramine dye solution according to Claim 1 wherein the solvent is the monomethyl ether of ethylene glycol.
Claim 5
Dependent Claim
19 words
An ethyl auramine dye solution according to Claim 1 wherein the solvent is the monoethyl ether of ethylene glycol.
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) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |