David A. Berges has been granted 10 US patents while listed as an inventor at Smithkline . The first was granted in 1980 and the most recent in April 2000. David A. Berges ranks #481,000 of 4,157,543 US inventors in our database (top 11.6%). Patent records list David A. Berges in Wayne, PA, US.
Patents per Year Patents granted per year, 1980 to 2000 Bar chart with a peak of 4 patents in 1980. peak 4 1980: 4 patents 1980 1981: 2 patents 1981 1997: 2 patents 1997 1999: 1 patents 1999 2000: 1 patents 2000
Issued Patents All Time
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Showing 1–10 of 10 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
6046209 Water soluble camptothecin analogs John J. Taggart 2000-04-04
$16,163,000
5883255 Substituted indolizino1,2-b!quinolinones Robert Philip Hertzberg , Randall K. Johnson , William D. Kingsbury 1999-03-16
$8,819,000
5670500 Water soluble camptothecin analogs John J. Taggart 1997-09-23
$44,552,000
5663177 Water soluble camptothecin analogs John J. Taggart 1997-09-02
$18,263,000
4308267 7-[2-Alkoxyimino-2-(amino-thiazole)acetami do]-3-[1-(sulfaminoalkly)tetrazolthiomethyl]cephalosporins George L. Dunn 1981-12-29
$12,140,000
4286089 7-Acyl-3-(substituted tetrazolyl thiomethyl)cephalosporins — 1981-08-25
$6,787,000
4220644 7-Acylamino-3-(substituted tetrazolyl thiomethyl) cephalosporins — 1980-09-02
$6,590,000
4211703 Phosphonoalkyl and esterified phosphonoalkyl substituted tetrazole thiols — 1980-07-08
$25,893,000
4210587 7-Acylamino-3-[1-[2-(carboxymethylamino)ethyl]tetrazol-5-ylthio methyl]-3-cephem-4-carboxylic acids — 1980-07-01
$8,463,000
4189573 7-Amino-3-(phosphonoalkyl and esterified phosphonoalkyl substituted tetrazolylthiomethyl)cephalosporins — 1980-02-19
$7,190,000