Patent DE139375C successfully refreshed from Google Patents.
Patent US4001139A successfully refreshed from Google Patents.
US4001139A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid scintillation solution
Assignee: Beckman Coulter Inc
•
Filing: 1975-11-28
•
Granted: 1977-01-04
•
Expires: 1995-11-28
Abstract
Abstract A liquid scintillation solution which includes (1) a scintillation solvent, (2) a primary scintillation solute, (3) a secondary scintillation solute, (4) a plurality of substantially different surfactants and (5) a filter dissolving and/or transparentizing agent.
Inventors
- 👤 Edward C. Long
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:37
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/16; G01T1/20; G01T1/204; G01T1/2042; C; C09; C09K; C09K11/00; C09K11/06
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
34 words
A liquid scintillation solution comprising a mixture of (a) a liquid scintillation solvent, (b) a primary scintillation solute, (c) a secondary scintillation solute, (d) a plurality of substantially different surfactants, (e) a dissolving-transparentizing agent.
Claim 2
Dependent Claim
34 words
A liquid scintillation solution comprising a mixture of (a) a liquid scintillation solvent, (b) a primary scintillation solute, (c) a secondary scintillation solute, (d) a plurality of substantially different surfactants, (e) a dissolving-transparentizing agent.
Claim 3
Dependent Claim
15 words
The liquid scintillation solution of claim 1 wherein the dissolving-transparentizing agent is a cyclic ether.
Claim 4
Dependent Claim
13 words
The liquid scintillation solution of claim 2 wherein the scintillation solvent is toluene.
Claim 5
Dependent Claim
14 words
The liquid scintillation solution of claim 2 wherein the primary scintillation solute is PPO.
Claim 6
Dependent Claim
15 words
The liquid scintillation solution of claim 2 wherein the secondary scintillation solute is Dimethyl POPOP.
Claim 7
Dependent Claim
20 words
The liquid scintillation solution of claim 2 wherein the plurality of substantially different surfactants are isooctylphenol-polyethoxyethanol and sodium dihexyl sulfosuccinate.
Claim 8
Dependent Claim
13 words
The liquid scintillation solution of claim 2 wherein the dissolving-transparentizing agent is tetrahydrofuran.
Claim 9
Dependent Claim
46 words
The liquid scintillation solution of claim 2 wherein the scintillation solvent is toluene, the primary scintillation solute is PPO, the secondary scintillation solute is Dimethyl POPOP, the plurality of substantially different surfactants are isooctylphenolpolyethoxyethanol and sodium dihexyl sulfosuccinate and the dissolving and/or transparentizing agent is tetrahydrofuran.
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) | 1980-01-04 | 1980-07-05 | 1981-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-04 | 1984-07-05 | 1985-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-04 | 1988-07-05 | 1989-01-04 | $7700.00 | Window Closed / Lapsed |