Process for making polyacrylonitrile fibers

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11248314
APP PUB NO 20190345642A1
SERIAL NO

16461455

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A process is disclosed herein comprising the steps:

    a) contacting an esterifying agent and a polysaccharide in the presence of a first solvent and suitable reaction conditions for a reaction time sufficient to form a product comprising a polysaccharide ester composition, the polysaccharide ester composition comprising a polysaccharide ester having a degree of substitution of about 0.001 to about 3;wherein the esterifying agent comprises an acyl halide, a phosphoryl halide, a carboxylic acid anhydride, a haloformic acid ester, a carbonic acid ester, or a vinyl ester; andthe ratio of esterifying agent to polysaccharide is in the range of about 0.001:1 to about 3:1 on a molar equivalent basis;b) combining the product obtained in step a) with polyacrylonitrile; andc) spinning fibers.

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

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
NUTRITION & BIOSCIENCES USA 4 INC3490 WINTON PLACE ROCHESTER NY 14623

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Adelman, Douglas J Wilmington, US 23 1343
Behabtu, Natnael Wilmington, US 52 210
Briegel, Alicia C Wilmington, US 8 25
Herbert, Christian Dormagen, DE 3 2
Johnson, Ross S Wilmington, US 33 251
Lenges, Christian Peter Wilmington, US 61 1706
Opper, Kathleen Wilmington, US 18 147
Wego, Andreas Jürgen Düsseldorf, DE 1 2

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 Aug 15, 2025
7.5 Year Payment $3600.00 $1800.00 $900.00 Aug 15, 2029
11.5 Year Payment $7400.00 $3700.00 $1850.00 Aug 15, 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