Method for producing oxymethylene copolymer

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 10280258
APP PUB NO 20160369050A1
SERIAL NO

14901783

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

The present invention provides a method for producing an oxymethylene copolymer which involves polymerizing trioxane and a comonomer cationically at a polymerization temperature of 135° C. to 300° C. in the presence of a protic acid salt having the molecular weight of 1000 or less, and at least one polymerization initiator selected from the group consisting of protic acids, protic acid anhydrides, and protic acid ester compounds having the molecular weight of 1000 or less.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
MITSUBISHI GAS CHEMICAL COMPANY INC5-2 MARUNOUCHI 2-CHOME CHIYODA-KU TOKYO 1008324 ?1008324

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Mochida, Satoshi Tokyo, JP 6 26
Nakaya, Daigo Tokyo, JP 7 27
Takahashi, Toru Tokyo, JP 639 7192

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
7.5 Year Payment $3600.00 $1800.00 $900.00 Nov 7, 2026
11.5 Year Payment $7400.00 $3700.00 $1850.00 Nov 7, 2030
Fee Large entity fee small entity fee micro entity fee
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
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