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US Patent 7589139 Polyvinylpyrrolidone powder composition and its production processes

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Patent Inventor Names
Mitsuru Nakajima0
Takashi Miyai0
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Patent abstract

There is disclosed a polyvinylpyrrolidone powder composition including polyvinylpyrrolidone having a K value of not lower than 60 and not higher than 130 and a secondary amine or a salt thereof. The poly-vinylpyrrolidone powder composition is produced by adding a secondary amine or a salt thereof to polyvinylpyrrolidone having a K value of not lower than 60 and not higher than 130, or by heat drying an aqueous solution containing polyvinylpyrrolidone having a K value of not lower than 60 and not higher than 130 and a secondary amine or a salt thereof.

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US Patent 07589139 Polyvinylpyrrolidone powder composition and its production processes US Patent 7589139 Polyvinylpyrrolidone powder composition and its production processes

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Patent Number
075891390
Patent Number
75891390
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Official Website
https://pdfpiw.uspto.gov/.piw?Docid=075891390
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Infobox
Is a
Patent
Patent
0
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
0
Patent Number
075891390
Date of Patent
September 15, 2009
0
Patent Application Number
117309100
Date Filed
April 4, 2007
0
Official Website
https://pdfpiw.uspto.gov/.piw?Docid=075891390
Patent Primary Examiner
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Helen L. Pezzuto
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Website URL
https://pdfpiw.uspto.gov/.piw?Docid=07589139
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 US Patent 07589139 Polyvinylpyrrolidone powder composition and its production processes

Infobox
Is a
Patent
Patent
Patent jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent number
07589139
Date of patent
September 15, 2009
Patent application number
11730910
Date Filed
April 4, 2007
Patent primary examiner
‌
Helen L. Pezzuto

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