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US4181650A Expired / Lapsed US ⏱️ 0.0 years remaining

Procedure for the assay of pharmacologically immunologically and biochemically active compounds in biological fluids

Assignee: Individual
•
Filing: 1975-08-25
•
Granted: 1980-01-01
•
Expires: 1995-08-25
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Abstract

Abstract A determination of the presence and amount of a specific organic substance (ligand) that will form a complex with a macromolecule (antibody) may be made by means of a reagent obtained by binding to the ligand to be assayed a chemiluminescent substance. The addition of a limited amount of a substance (antibody) having receptors for the ligand together with the chemiluminescent labeled ligand to the fluid to be assayed results in a competitive reaction between the ligand present in the fluid and the chemiluminescent labeled ligand for the limited number of receptor sites. Under equilibrium conditions, the amount of chemiluminescent labeled ligand bound to the antibody is related to the amount of unlabeled ligand in the solution being assayed, and is determined by isolating the antibody and measuring its chemiluminescence or by isolating and measuring the amount of free labeled-ligand remaining.

Inventors

  • 👤 Charles L. Maier, Jr.

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 03:41
CPC Classifications
C; C07; C07K; C07K14/00; C07K14/435; C07K14/575; C07K14/62; G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/53; G01N33/531; G01N33/532; G01N33/533; G01N33/58; G01N33/582; G01N33/74; Y; Y10; Y10S; Y10S435/00; Y10S435/968; Y10S435/971; Y10S436/00; Y10S436/80; Y10S436/805; Y10S436/815; Y10S436/817; Y10T; Y10T436/00; Y10T436/10; Y10T436/105831; Y10T436/108331

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 11 words
An insulin-chemiluminescent substance conjugate having luminescent activity measurable by photosensitive means.
Claim 2
Dependent Claim 11 words
An insulin-chemiluminescent substance conjugate having luminescent activity measurable by photosensitive means.
Claim 3
Dependent Claim 87 words
The insulin-chemiluminescent conjugate of claim 1 wherein said chemiluminescent substance is selected from the group consisting of 2,3-dihydropthalizine-1,4-diones of the following general formula: ##STR4## where R is: NH 2 ; NCH 3 ; NHC 2 H 5 ; NHCH 2 C 6 H 5 ; NHCOCH 2 Cl; NHCOCH 2 NH 2 ; NHCOCH 2 NHNH 2 ; N(CH 3 ) 2 ; N(C 2 H 5 ) 2 ; N(CH 2 C 6 H 5 ) 2 , tetrabis (dimethylamine) ethylene, luciferin, lucigenin or oxalyl chloride.
Claim 4
Dependent Claim 17 words
The ligand-chemiluminescent conjugate of claim 1 wherein said ligand is insulin and said chemiluminescent substance is luminol.
Claim 5
Dependent Claim 14 words
An insulin-luminol conjugate prepared by reacting luminol with insulin in the presence of glutaraldehyde.
Claim 6
Dependent Claim 14 words
An insulin-luminol conjugate prepared by reacting luminol with insulin in the presence of glutaraldehyde.
Claim 7
Dependent Claim 13 words
The insulin-luminol conjugate of claim 4 having a label ratio of about 1:10.
Claim 8
Independent Claim 21 words
The method of activating an insulin-luminol conjugate which comprises adding thereto a solution containing an alkali metal ferricyanide and hydrogen peroxide.
Claim 9
Independent Claim 21 words
The method of activating an insulin-luminol conjugate which comprises adding thereto a solution containing an alkali metal ferricyanide and hydrogen peroxide.
Claim 10
Independent Claim 15 words
The method of activating an insulin-luminol conjugate which comprises adding thereto an alkali metal hypochlorite.
Claim 11
Independent Claim 15 words
The method of activating an insulin-luminol conjugate which comprises adding thereto an alkali metal hypochlorite.

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) 1982-12-31 1983-07-02 1984-01-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1986-12-31 1987-07-02 1988-01-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1990-12-31 1991-07-02 1992-01-01 $7700.00 Window Closed / Lapsed

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