Desalination of polyaryl ethers by means of melt extraction

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9975994
SERIAL NO

15545546

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A method for desalinating a salt-containing polymer (SP) comprising a polyaryl ether having a softening temperature TS and a salt (S), comprising the steps of

    a) providing the salt-containing polymer (SP) at a first temperature T1 above the softening temperature TS of the polyaryl ether,b) contacting the salt-containing polymer (SP) provided in step a) with an extractant (E) to obtain a desalinated polymer (DP) comprising the polyaryl ether, and a salt-containing extractant (SE) comprising the extractant (E) and the salt (S).

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

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
BASF SEGERMANY

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gramlich, Simon Hirschberg, DE 15 23
Niedermaier, Frank Ladenburg, DE 3 11
Stammer, Achim Freinsheim, DE 62 411
Ulzhöfer, Angela Ludwigshafen, DE 6 12

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 22, 2025
11.5 Year Payment $7400.00 $3700.00 $1850.00 Nov 22, 2029
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