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David Alker — 23 Patents

Pfizer: 22 patents #123 of 5,153Top 3%
Overall (All Time): #178,160 of 4,157,543Top 5%
23 Patents All Time
David Alker has been granted 23 US patents while listed as an inventor at Pfizer. The first was granted in 1985 and the most recent in April 2002. David Alker ranks #178,160 of 4,157,543 US inventors in our database (top 4.3%). Patent records list David Alker in Eastry, IL, GB.

Issued Patents All Time

Showing 1–23 of 23 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
6380396 Quaternary ammonium compounds Sandra Marina Monaghan, Christopher J. Burns 2002-04-30 $143,968,000
6262046 Azetidinylpropylpiperidine derivatives, intermediates and use as tachykinin antagonists Thomas Victor Magee, Graham Nigel Maw, Donald Middleton 2001-07-17 $383,854,000
6207678 Quaternary ammonium compounds as tachykinin antagonists Sandra Marina Monaghan, Christopher J. Burns 2001-03-27 $697,533,000
5607950 Muscarinic receptor antagonists Peter E. Cross, Alexander Roderick MacKenzie 1997-03-04 $43,795,000
5534626 1-arylethyl-3-substituted piperidines Peter E. Cross, Robert M. Wallis 1996-07-09 $100,377,000
5486527 Anticholinergic agents Peter E. Cross 1996-01-23 $249,195,000
5418229 Muscarinic receptor antagonists Peter E. Cross 1995-05-23
5410046 1-arylethyl-3-substituted piperidines Peter E. Cross, Robert M. Wallis 1995-04-25 $56,620,000
5397800 Certain 1-azabicyclo[2.2.1]heptanes useful as muscarinic receptor antagonists Peter E. Cross, John E. G. Kemp 1995-03-14 $62,492,000
5358953 Imidazopyridine PAF/H.sub.1 antagonists Robert J. Bass, Kelvin Cooper 1994-10-25 $13,313,000
5344835 Piperidine and pyrrolidine derivatives Peter E. Cross 1994-09-06 $112,086,000
5231104 1-arylethyl-3-substituted piperidines Peter E. Cross, Robert M. Wallis 1993-07-27 $125,643,000
5192765 Certain amines which are muscarinic receptor antagonists Robert J. Bass, Peter E. Cross 1993-03-09 $25,629,000
5089505 1-arylethyl-3-substituted piperidines Peter E. Cross, Robert M. Wallis 1992-02-18 $31,714,000
5071844 5,11-dihydrodibenzo[b,e][1,4]-thiazepines useful as gastro intestinal selective calcium antagonists Robert J. Bass, Peter E. Cross 1991-12-10 $20,742,000
4957930 Dihydropyridine derivatives Peter E. Cross 1990-09-18 $21,101,000
4892881 Dihydropyridine anti-ischaemic and antihypertensive agents Simon F. Campbell, Peter E. Cross 1990-01-09 $24,033,000
4732985 2-oxygen containing heteroalkoxyalkyl dihydropyridine intermediates Simon F. Campbell, Peter E. Cross 1988-03-22 $15,090,000
4654353 Antihypertensive 2-hydroxyalkoxyalkyl dihydropyridines Simon F. Campbell, Peter E. Cross 1987-03-31 $9,828,000
4618609 Anti-ischaemic and antihypertensive 2-[pyrimidyloxy alhoxymethyl]-1,4-dihydropyridines Simon F. Campbell, Peter E. Cross 1986-10-21 $24,756,000
4590195 4-aryl-3,5-bis(alkoxycarbonyl)-6-methyl -2-aminoalkyloxymethyl-1,4-dihydropyridine antihypertensive agents Peter E. Cross, Simon F. Campbell 1986-05-20 $10,383,000
4568677 2-(4-Pyrimidone alkoxyalkyl) dihydropyridine anti-ischaemic and antihypertensive agents Peter E. Cross, Simon F. Campbell 1986-02-04 $9,939,000
4548935 Dihydropyridine anti-ischaemic and anti-hypertensive agents, compositions and use Peter E. Cross, Simon F. Campbell 1985-10-22 $36,682,000