Method of preparing sitagliptin and intermediates used therein

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8624026
APP PUB NO 20120214997A1
SERIAL NO

13502260

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

Disclosed are a novel, simple and low-cost method for preparing sitagliptin of formula (I), as DPP-IV (dipeptidyl peptidase IV) inhibitor, which is useful in treating type 2 diabetes mellitus and key intermediates used in said preparation of sitagliptin:

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

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
HANMI SCIENCE CO LTD214 MUHA-RO PALTAN-MYEON GYEONGGI-DO HWASEONG-SI 18536

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chang, Ji Yeon Seoul, KR 1 1
Chang, Young Kil Seoul, KR 21 23
Jung, Jae Hyuk Goyang-si, KR 6 7
Kim, Dong Jun Osan-si, KR 109 321
Kim, Nam Du Hwaseong-si, KR 12 13
Lee, Gwan Sun Seoul, KR 69 722
Lee, Hyun Seung Seoul, KR 27 32

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
11.5 Year Payment $7400.00 $3700.00 $1850.00 Jul 7, 2025
Fee Large entity fee small entity fee micro entity fee
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