➤ Get the DrugPatentWatch Daily Briefing

Get Daily Updates on Generic Entry, Litigation, Biosimilars, and more …

Serving leading biopharmaceutical companies globally:

Johnson and Johnson
AstraZeneca
Baxter
Medtronic
Mallinckrodt
McKinsey

Last Updated: September 20, 2020

DrugPatentWatch Database Preview

Patent: 4,620,932

➤ Get the DrugPatentWatch Daily Briefing
» See Plans and Pricing

« Back to Dashboard

Summary for Patent: 4,620,932
Title: Submicronic hydrophilic filter media
Abstract:The present invention is a one-piece construction sub-micronic filter media capable of high volume filtration of sub-micronic sized particulate from fluids without the addition of wetting agents, solvents, added electrical charge enhancers, or elevated pressure differentials, which includes a continuous matrix having an initial micron rating of from about 1 to about 5 microns. The continuous matrix is impregnated with a hydrophilic terpolymer by step-wise addition of low viscosity terpolymerization mixture including 10% to 14% by weight of a polymer which includes at least one of alkyl acrylate and alkyl methacrylate and acrylic acid. The terpolymeric mixture also includes 17 to about 20% by weight of polyethyleneimine and urea solution, from about 7 to about 10% ammonia and from about 2 to about 6% by weight epoxy resin. The polymerization mixture has a solids content of from about 16 to about 20% by weight prior to polymerization. The step-wise addition by which the matrix is impregnated includes saturating the matrix material with the terpolymeric mixture followed by compressing the saturated material and repeating the saturation compressing at least one additional time followed by drying the saturated matrix.
Inventor(s): Howery; Kenneth A. (South Orange, NJ)
Assignee:
Application Number:06/651,513
Patent Claims:see list of patent claims

Details for Patent 4,620,932

Applicant Tradename Biologic Ingredient Dosage Form BLA Number Approval Date Patent No. Assignee Estimated Patent Expiration Status Orphan Source
Merck Sharp & Dohme Corp. ZOSTAVAX zoster vaccine live INJECTION, POWDER, LYOPHILIZED, FOR SUSPENSION 125123 001 2006-05-25   Start Trial 2003-11-04 search
Merck Sharp & Dohme Corp. ZOSTAVAX zoster vaccine live INJECTION, POWDER, LYOPHILIZED, FOR SUSPENSION 125123 1 2006-05-25   Start Trial 2003-11-04 search
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Number >Approval Date >Patent No. >Assignee >Estimated Patent Expiration >Status >Orphan >Source

Make Better Decisions: Try a trial or see plans & pricing

Serving leading biopharmaceutical companies globally:

Harvard Business School
Johnson and Johnson
McKesson
Merck
Moodys
Mallinckrodt

Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. thinkBiotech performs no independent verification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.