Carbon fiber production method

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11261545
APP PUB NO 20210054540A1
SERIAL NO

16612261

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A carbon fiber production method includes a carbon fiber production step including an oxidation step and a carbonization step; and an exhaust gas processing step including a heat exchange step; an external air mixing step; and a mixed external air supplying step in which the mixed external air is supplied to at least one step that uses heated gas in the steps in the carbon fiber production step; and among the exhaust gases, a high heating value exhaust gas having a heating value of 250 kcal/Nm3 or higher is supplied to an inlet side of an exhaust gas combustion apparatus and a low heating value exhaust gas having a heating value lower than 150 kcal/Nm3 is supplied to an outlet side of the exhaust gas combustion apparatus, respectively.

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

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
TORAY INDUSTRIES INCJAPAN'S TOKYO CENTRAL NIHONBASHI MUROMACHI 2 CHOME 1 NO 1 TOKYO TOKYO METROPOLIS

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Konishi, Hiroyuki Ehime, JP 79 350
Taki, Kosuke Ehime, JP 15 11
Ueda, Hiroomi Ehime, JP 5 76

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
3.5 Year Payment $1600.00 $800.00 $400.00 Sep 1, 2025
7.5 Year Payment $3600.00 $1800.00 $900.00 Sep 1, 2029
11.5 Year Payment $7400.00 $3700.00 $1850.00 Sep 1, 2033
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
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