Process of forming a microperforated polymeric film for sound absorption

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Jun 8, 2010
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Dec 17, 2004
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Jul 24, 1998

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Abstract

mils, a narrowest diameter less than a film thickness, and a widest diameter greater than narrowest diameter. The widest diameter may be about 125% or more of the narrowest diameter in an embodiment.

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3M INNOVATIVE PROPERTIES COMPANY	ST PAUL MN

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B29C:SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTAN....

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Inventor Name	Address	# of filed Patents	Total Citations
Wood, Kenneth Brian	St. Paul, US	3	117

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Process of forming a microperforated polymeric film for sound absorption

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United States of America Patent

11015930

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US Family Size	Non-US Coverage
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DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
June 08, 2010	US,7731878,B2 US7731878B2	GRANTED PATENT AS SECOND PUBLICATION
May 19, 2005	US,20050104245,A1 US20050104245A1	FIRST PUBLISHED PATENT APPLICATION

PATENT NO	7731878
SERIAL NO	11015930
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