Ear plugs and method of forming same

United States of America Patent

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Aug 29, 2006
Grant Date
Apr 1, 2004
app pub date
Sep 27, 2002
filing date
Sep 27, 2002

priority date (Note)
Expired

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Abstract

A process for forming a foamed thermoplastic earplug, comprising the steps of extruding a foamed body of thermoplastic material; shaping the foamed thermoplastic material; and at least partially separating the resulting shaped material for forming individual earplugs.

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Patent Owner(s)

Patent Owner	Address
LIGON BROTHERS MANUFACTURING	3776 VAN DYKE ALMONT MI 48003

International Classification(s)

A61F:FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES....

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Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Lewis, Jeffrey C	Rochester Hills, MI	19	442
Ligon, Sr James T	Almont, MI	14	818

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Ear plugs and method of forming same

Number of patents in Portfolio can not be more than 2000

United States of America Patent

10256644

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PATENT NO	7096872
APP PUB NO	20040060567A1
SERIAL NO	10256644
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity Expired	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
August 29, 2006	US,7096872,B2 US7096872B2	GRANTED PATENT AS SECOND PUBLICATION
April 01, 2004	US,20040060567,A1 US20040060567A1	FIRST PUBLISHED PATENT APPLICATION

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10256644

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