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               1951 Bill Hanson, an electrical, mechanical and chemical engineer, establishes Hanson Research Company in a small garage shop in Los Angeles.
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               1950’s HRC manufactures components and small motors for the local aerospace industry and other industrial applications.
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         | 1963 Due to its growing enterprise, HRC is incorporated in the state of California as Hanson Research Corporation. 
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         | 1960’s Bill Hanson works with scientists at USP, FDA and the pharmaceutical industry in pioneering and prototyping early dissolution test instruments. 
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         | 1969 HRC introduces the industry’s first commercial 6-vessel dissolution test station. 
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         | 1970’s Moving to a larger manufacturing site, HRC develops a complete product line of dissolution test systems for the pharmaceutical industry. HRC continues its cooperative research with USP and FDA on refining the dissolution test apparatus. 
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         | 1975 HRC introduces the industry’s first automated dissolution test system, the “Dissograph.” 
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         | 1982 After completing his PhD in engineering, Bill Hanson publishes the 1st Edition of the Handbook of Dissolution Testing. 
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         | 1980’s HRC continues its product development and innovation with the “QC72” and “SR72” test stations, and the new “Dissoette” autosampler system. HRC also develops systems for media-prep, on-line HPLC testing (with Waters), and transdermal diffusion cell testing. 
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         | 1991 Bill Hanson updates and publishes the 2nd Edition of the Handbook of Dissolution Testing. 
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         | 1990’s Moving again to a larger, modern manufacturing facility, HRC continues its growth by serving research and quality control labs worldwide. Throughout this era, HRC is awarded numerous patents for design and technology. 
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         | 1995 HRC introduces its new line of dissolution testers, the “SR8-Plus”, followed by the “Media-Mate Plus” media prep system, the “AutoPlus” precision syringe pump autosampler, and the new “Transfer Module” for on-line HPLC with Waters. 
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         | 1998 HRC is fully certified for international ISO 9001 Quality. 
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         | 2000's The “Hanson curve” logo is introduced. It reflects the profile of a dissolution vessel and celebrates founder Bill Hanson, whose favorite color was orange. 
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         | 2000’s HRC continues its innovative technology for pharmaceutical testing and quality assurance worldwide, including “Q-Pak” validation guidelines, 21 CFR Part 11 compliant software/firmware, and the new “MicroettePlus” transdermal and topical diffusion cell test system. 
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         | 2003 HRC is fully certified for new ISO 9001:2000 Quality. 
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         | 2004 HRC introduces “Bill” DDS Dissolution Data System, the dissolution industry’s first LIMS-ready data system. 
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         | 2005 Roy Hanson, CEO, and Vivian Gray, consultant, update and publish the 3rd Edition of the Handbook of Dissolution Testing. 
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         | 2016 Acquired by Teledyne Instruments to become Teledyne Hanson. 
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