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• 15 United States
• 10 France
• 8 Japan
• 7 China
• 5 Korea
• 2 Other

Patent Owner(s)

Patent Owner	Address
MILLIPORE INVESTMENT HOLDINGS LIMITED	SUITE 350 1013 CENTRE ROAD WILMINGTON DE 19805

International Classification(s)

• B01D:SEPARATION

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Ha, Young S	Billerica, MA	1	26
# of filed Patents : 1 Total Citations : 26
Surette, Eileen D	Revere, MA	1	26
# of filed Patents : 1 Total Citations : 26
Weinstein, Martin J	Salisbury, MA	18	369
# of filed Patents : 18 Total Citations : 369

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Patent Citation Ranking

• 26 Citation Count
• B01D Class

• 81.98 % this patent is cited more than
• 32 Age

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge after expiration - Late payment is unavoidable	$700.00	$350.00	$175.00
Surcharge after expiration - Late payment is unintentional	$1,640.00	$820.00	$410.00

Full Text

US Patent No: 4372774

Thermal treatment of glass

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Abstract

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The thermal treatment of glass is effected by contacting the glass, when it is hot, with a gas-fluidized mixture of particulate materials, at least one of which is selected to have gas-generating properties when heated by the hot glass. The materials are mixed in selected pre-determined proportions which impart to the mixture a thermal capacity and flowability which are such that a required thermal treatment is achieved. The method is particularly suitable for the thermal toughening of glass sheets for vehicle windscreens.

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Description

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Claims

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• AS2002
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• FPAY2001
• AS�2001
• I1998
• F1997
• AS1997

Date	Code	Event	Description
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Apr 25, 2007	AS	ASSIGNMENT	free format text: RELEASE OF SECURITY INTEREST IN PATENTS;ASSIGNOR:WILMINGTON TRUST COMPANY;REEL/FRAME:019699/0512 Owner name: POLAROID HOLDING COMPANY, MASSACHUSETTS Effective Date: Apr 25, 2007 free format text: RELEASE OF SECURITY INTEREST IN PATENTS;ASSIGNOR:WILMINGTON TRUST COMPANY;REEL/FRAME:019699/0512 Owner name: POLAROID CORPORATION, MASSACHUSETTS Effective Date: Apr 25, 2007 free format text: RELEASE OF SECURITY INTEREST IN PATENTS;ASSIGNOR:WILMINGTON TRUST COMPANY;REEL/FRAME:019699/0512 Owner name: POLAROID CAPITAL LLC, MASSACHUSETTS Effective Date: Apr 25, 2007 free format text: RELEASE OF SECURITY INTEREST IN PATENTS;ASSIGNOR:WILMINGTON TRUST COMPANY;REEL/FRAME:019699/0512 Owner name: POLAROID ASIA PACIFIC LLC, MASSACHUSETTS Effective Date: Apr 25, 2007 free format text: RELEASE OF SECURITY INTEREST IN PATENTS;ASSIGNOR:WILMINGTON TRUST COMPANY;REEL/FRAME:019699/0512 Owner name: POLAROID EYEWEAR LLC, MASSACHUSETTS Effective Date: Apr 25, 2007 free 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May 12, 1998	I	Issuance
Apr 22, 1997	F	Filing
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