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

Patent Owner(s)

Patent Owner	Address
CHEVRON CHEMICAL COMPANY	SAN RAMON CA

International Classification(s)

• B01J:CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, CO....

• 2000 Application Filing Year
• B01J Class
• 1155 Applications Filed
• 512 Patents Issued To-Date
• 44.33 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Auburn, Pamela R	Kingwood, TX	9	48
# of filed Patents : 9 Total Citations : 48
Pecoraro, Theresa A	Danville, CA	32	629
# of filed Patents : 32 Total Citations : 629

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Patent Citation Ranking

• 1 Citation Count
• B01J Class

• 5.28 % this patent is cited more than
• 25 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: 6153553

Process for the polymerization of alpha olefins using a new aluminophosphate support

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Abstract

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Novel catalysts are provided for the polymerization of olefins such as ethylene. These catalysts comprise a novel amorphous aluminophosphate comprising, on a microlevel, sheets of aluminophosphate as well as spheres of aluminophosphate plus a chromium compound. These new catalysts are surprisingly active; result in more co-monomer incorporation than prior art catalysts and reduce the amount of low molecular weight material in the product.

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Description

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Claims

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Legal Events

 

• STCH2004
• LAPS2004
• LAPS2004
• FP2004
• REMI2004
• I2000
• F2000
• PD1998

Date	Code	Event	Description
Dec 29, 2004	STCH	INFORMATION ON STATUS: PATENT DISCONTINUATION	free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362
Dec 29, 2004	LAPS	LAPSE FOR FAILURE TO PAY MAINTENANCE FEES	free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY
Nov 29, 2004	LAPS	LAPSE FOR FAILURE TO PAY MAINTENANCE FEES
Nov 28, 2004	FP	LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE	Effective Date: Nov 28, 2004
Jun 16, 2004	REMI	MAINTENANCE FEE REMINDER MAILED
Nov 28, 2000	I	Issuance
Jan 11, 2000	F	Filing
Oct 01, 1998	PD	Priority Date