IP Library Granted Patent US 7,915,432
Granted Patent B2
US 7,915,432 · App. 11/953,628 · Granted Mar 29, 2011

Method for improving the shelf-life of hematoxylin staining solutions

Assignee: Cytyc Corporation
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 7,915,432
App. No.
11/953,628
Granted
Mar 29, 2011
Kind
B2
Abstract

A method is provided for improving the shelf-life of a nuclear staining solution. In particular, the present invention provides a method of adding an antioxidant to a hematoxylin staining solution which maintains the performance of the stain over its shelf-life.

Claims (5)

1. A method for reducing the oxidation of a nuclear stain comprising adding an antioxidant sufficient to increase the shelf-life of the nuclear stain wherein the nuclear stain is hematoxylin and wherein the antioxidant is selected from the group consisting of glutathione, uric acid, tannic acid, sodium bisulfite, butylated hydroxytoluene, butylated hydroxylanisole, and propyl gallate.

2. The method of claim 1 wherein the antioxidant is L-ascorbic acid.

3. A method for reducing the oxidation of a hematoxylin stain comprising adding an amount of antioxidant sufficient to increase the shelf-life of the hematoxylin stain, wherein the antioxidant is selected from the group consisting of glutathione, uric acid, tannic acid, sodium bisulfite, butylated hydroxytoluene, butylated hydroxylanisole, and propyl gallate.

4. The method of claim 3 wherein the antioxidant is L-ascorbic acid.

5. A method for reducing the oxidation of a hematoxylin stain comprising adding an amount of L-ascorbic acid sufficient to increase the shelf-life of the hematoxylin stain.

Assignments (11)
RELEASE OF SECURITY INTEREST Recorded Apr 28, 2026
From: BANK OF AMERICA, N.A., AS COLLATERAL AGENT
To: HOLOGIC, INC., ON ITS OWN BEHALF AND AS SUCCESSOR-BY-MERGER TO DIRECT RADIOGRAPHY CORP.; CYTYC CORPORATION, ON ITS OWN BEHALF AND AS SUCCESSOR-BY-MERGER TO BIOLUCENT, LLC; CYTYC SURGICAL PRODUCTS, LLC, AS SUCCESSOR-BY-CONVERSION TO CYTYC SURGICAL PRODUCTS, LIMITED PARTNERSHIP; GEN-PROBE INCORPORATED, ON ITS OWN BEHALF AND AS SUCCESSOR-BY-MERGER TO THIRD WAVE TECHNOLOGIES, INC.; GEN-PROBE PRODESSE, INC.; SUROS SURGICAL SYSTEMS, INC.
Reel/Frame 075566/0039 →
SECURITY INTEREST Recorded Apr 8, 2026
From: BIOTHERANOSTICS, INC.; GEN-PROBE INCORPORATED; GEN-PROBE PRODESSE, INC.; CYTYC CORPORATION; SUROS SURGICAL SYSTEMS, INC.; GYNESONICS, INC.; BOLDER SURGICAL, LLC; FAXITRON BIOPTICS, LLC; HEALTH BEACONS, INC.; HOLOGIC, INC.
To: ROYAL BANK OF CANADA, AS COLLATERAL AGENT
Reel/Frame 075462/0440 →
CORRECTIVE ASSIGNMENT TO CORRECT THE INCORRECT PATENT NO. 8081301 PREVIOUSLY RECORDED AT REEL: 035820 FRAME: 0239. ASSIGNOR(S) HEREBY CONFIRMS THE SECURITY INTEREST RELEASE. Recorded Nov 9, 2017
From: GOLDMAN SACHS BANK USA, AS COLLATERAL AGENT
To: HOLOGIC, INC.; BIOLUCENT, LLC; CYTYC CORPORATION; CYTYC SURGICAL PRODUCTS, LIMITED PARTNERSHIP; SUROS SURGICAL SYSTEMS, INC.; THIRD WAVE TECHNOLOGIES, INC.; GEN-PROBE INCORPORATED
Reel/Frame 044727/0529 →
CORRECTIVE ASSIGNMENT TO CORRECT THE INCORRECT PATENT NO. 8081301 PREVIOUSLY RECORDED AT REEL: 028810 FRAME: 0745. ASSIGNOR(S) HEREBY CONFIRMS THE SECURITY AGREEMENT. Recorded Nov 9, 2017
From: HOLOGIC, INC.; BIOLUCENT, LLC; CYTYC CORPORATION; CYTYC SURGICAL PRODUCTS, LIMITED PARTNERSHIP; SUROS SURGICAL SYSTEMS, INC.; THIRD WAVE TECHNOLOGIES, INC.; GEN-PROBE INCORPORATED
To: GOLDMAN SACHS BANK USA
Reel/Frame 044432/0565 →
SECURITY AGREEMENT Recorded Aug 7, 2015
From: HOLOGIC, INC.; BIOLUCENT, LLC; CYTYC CORPORATION; CYTYC SURGICAL PRODUCTS, LIMITED PARTNERSHIP; DIRECT RADIOGRAPHY CORP.; GEN-PROBE INCORPORATED; GEN-PROBE PRODESSE, INC.; SUROS SURGICAL SYSTEMS, INC.; THIRD WAVE TECHNOLOGIES, INC.
To: BANK OF AMERICA, N.A., AS COLLATERAL AGENT
Reel/Frame 036307/0199 →
SECURITY INTEREST RELEASE REEL/FRAME 028810/0745 Recorded Jun 4, 2015
From: GOLDMAN SACHS BANK USA, AS COLLATERAL AGENT
To: HOLOGIC, INC.; BIOLUCENT, LLC; CYTYC CORPORATION; CYTYC SURGICAL PRODUCTS, LIMITED PARTNERSHIP; SUROS SURGICAL SYSTEMS, INC.; THIRD WAVE TECHNOLOGIES, INC.; GEN-PROBE INCORPORATED
Reel/Frame 035820/0239 →
SECURITY AGREEMENT Recorded Aug 1, 2012
From: HOLOGIC, INC.; BIOLUCENT, LLC; CYTYC CORPORATION; CYTYC SURGICAL PRODUCTS, LIMITED PARTNERSHIP; SUROS SURGICAL SYSTEMS, INC.; THIRD WAVE TECHNOLOGIES, INC.; GEN-PROBE INCORPORATED
To: GOLDMAN SACHS BANK USA
Reel/Frame 028810/0745 →
TERMINATION OF PATENT SECURITY AGREEMENTS AND RELEASE OF SECURITY INTERESTS Recorded Aug 26, 2010
From: GOLDMAN SACHS CREDIT PARTNERS, L.P., AS COLLATERAL AGENT
To: HOLOGIC, INC.; R2 TECHNOLOGY, INC.; SUROS SURGICAL SYSTEMS, INC.; BIOLUCENT, LLC; DIRECT RADIOGRAPHY CORP.; CYTYC SURGICAL PRODUCTS II LIMITED PARTNERSHIP; CYTYC SURGICAL PRODUCTS LIMITED PARTNERSHIP; CYTYC CORPORATION; CYTYC SURGICAL PRODUCTS III, INC.; CYTYC PRENATAL PRODUCTS CORP.; THIRD WAVE TECHNOLOGIES, INC.
Reel/Frame 024892/0001 →
PATENT SECURITY AGREEMENT Recorded Jul 29, 2008
From: CYTYC CORPORATION
To: GOLDMAN SACHS CREDIT PARTNERS L.P., AS COLLATERAL AGENT
Reel/Frame 021301/0879 →
FIRST SUPPLEMENT TO PATENT SECURITY AGREEMENT Recorded May 7, 2008
From: CYTYC CORPORATION
To: GOLDMAN SACHS CREDIT PARTNERS L.P., AS COLLATERAL AGENT
Reel/Frame 020915/0519 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 23, 2008
From: FOSTER, PATRICK; CYTYC CORPORATION
To: CYTYC CORPORATION
Reel/Frame 020400/0674 →
Continuity (2)
Provisional Application 60874407 · Dec 12, 2006
Related Publication 20080139827A1 · Jun 12, 2008