Synthesis and anti-proliferative effect of substituted imidazo[4,5-b]pyrazine compounds
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United States of America Patent
Stats
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Jan 29, 2013
Grant Date -
Apr 19, 2012
app pub date -
Dec 20, 2011
filing date -
Feb 1, 2008
priority date (Note) -
In Force
status (Latency Note)
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Abstract
This invention provides for compounds, compositions, and methods that involve anti-proliferative and anti-neoplastic activity in cancer cells. In particular, a series of benzimidazole, purine, imidazopyridine, and imidazopyrizine compounds having selected substitution patterns are disclosed, and the activity of various subject compounds is demonstrated. In particular, the disclosure provides for substituted imidazo[4,5-b]pyrazine compounds having the general formula
First Claim
all claims..Other Claims data not available
Family
Country | kind | publication No. | Filing Date | Type | Sub-Type |
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US | B2 | US7947723 | Jan 30, 2009 | Patent | Grant |
Type : Patent Sub-Type : Grant | |||||
GRANTED PATENT AS SECOND PUBLICATION | Synthesis and anti-proliferative effect of benzimidazole derivatives | May 24, 2011 | |||
US | B2 | US8106084 | Mar 03, 2011 | Patent | Grant |
Type : Patent Sub-Type : Grant | |||||
GRANTED PATENT AS SECOND PUBLICATION | Synthesis and anti-proliferative effect of benzimidazole derivatives | Jan 31, 2012 | |||
US | B2 | US8334302 | Dec 20, 2011 | Patent | Grant |
Type : Patent Sub-Type : Grant | |||||
GRANTED PATENT AS SECOND PUBLICATION | Synthesis and anti-proliferative effect of substituted imidazo[4,5-b]pyridine compounds | Dec 18, 2012 | |||
US | B2 | US8329728 | Dec 20, 2011 | Patent | Grant |
Type : Patent Sub-Type : Grant | |||||
GRANTED PATENT AS SECOND PUBLICATION | Synthesis and anti-proliferative effect of substituted imidazo[4,5-c]pyridine compounds | Dec 11, 2012 | |||
US | B2 | US8357691 | Dec 20, 2011 | Patent | Grant |
Type : Patent Sub-Type : Grant | |||||
GRANTED PATENT AS SECOND PUBLICATION | Synthesis and anti-proliferative effect of benzimidazole derivatives | Jan 22, 2013 |
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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SPELMAN COLLEGE | ATLANTA GA |
International Classification(s)

- 2011 Application Filing Year
- A61K Class
- 10915 Applications Filed
- 8360 Patents Issued To-Date
- 76.60 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Winfield, Leyte L | Austell, US | 6 | 38 |
# of filed Patents : 6 Total Citations : 38 |
Cited Art Landscape
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Patent Citation Ranking
- 2 Citation Count
- A61K Class
- 14.18 % this patent is cited more than
- 12 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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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 |
Full Text

Legal Events
Date | Code | Event | Description |
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Jul 29, 2019 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Jul 29, 2019 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
Jun 21, 2019 | FP | LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Jun 21, 2019 |
Feb 11, 2019 | FEPP | FEE PAYMENT PROCEDURE | free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
Dec 22, 2014 | FPAY | FEE PAYMENT | year of fee payment: 4 |
Dec 04, 2014 | FEPP | FEE PAYMENT PROCEDURE | free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
Jun 21, 2011 | I | Issuance | |
Jun 01, 2011 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Mar 11, 2010 | P | Published | |
Apr 23, 2008 | F | Filing | |
Apr 23, 2007 | PD | Priority Date |

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