Carboxylic acid derivatives and use thereof in the preparation of prodrugs

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 10239851
APP PUB NO 20170057939A1
SERIAL NO

15119587

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

The present invention discloses a class of carboxylic acid derivatives and use thereof in preparation of prodrugs. The carboxylic acid derivatives have the general formula (I), wherein R1 is H or alkyl; X is H or F; Y is F or fluoroalkyl; n is 0, 1, 2, 3, 4, 5, or 6; W is W1 or W2; W1 is NR2R3, NR2R3.A,

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

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
LI QINGENGCHONGQING 400016

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Gang Chongqing, CN 944 8640
Li, Qingeng Chongqing, CN 8 6
Mao, Wei Chongqing, CN 101 482
Wang, Tao Chongqing, CN 1447 9693
Wang, Yuanzhong Chongqing, CN 17 12
Wu, Tong Chongqing, CN 171 1394
Zeng, Lingguo Chongqing, CN 8 7

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 Sep 26, 2026
11.5 Year Payment $7400.00 $3700.00 $1850.00 Sep 26, 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