AQUEOUS QUENCHING MEDIA AND USE THEREOF IN QUENCHING METAL SUBSTRATES

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United States of America Patent

SERIAL NO

11870457

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Abstract

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Aqueous media for quenching metal substrates are provided and contain (i) a polyvinylpyrrolidone/polyvinylcaprolactam copolymer and (ii) one or more of a second polymer, which is selected from (a) a substituted oxazoline polymer; (b) a poly(oxyethylene-oxyalkylene) glycol; or (c) a polyvinylpyrrolidone polymer. The quenching bath provides reduced cooling rates through the martensite temperature ranges. Also provided are processes for quenching metal substrates using these quenching media.

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Patent Owner(s)

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HOUGHTON TECHNICAL CORP300 DELAWARE AVENUE SUITE 316 WILMINGTON DE 19801

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  • 2007 Application Filing Year
  • C21D Class
  • 183 Applications Filed
  • 96 Patents Issued To-Date
  • 52.46 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances200720082009201020112012201320142015201620172018201920200255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gunsalus, Laura Gilbertsville, US 3 3
Warchol, Joseph F Norristown, US 17 111

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  • 1 Citation Count
  • C21D Class
  • 12.26 % this patent is cited more than
  • 16 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges1379112101 - 1011 - 2021 - 3041 - 500510152025303540455055606570758085

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