PS

Phaik-Eng Sum

AC American Cyanamid: 38 patents #13 of 1,554Top 1%
Pfizer: 13 patents #341 of 5,153Top 7%
📍 New City, NY: #6 of 319 inventorsTop 2%
🗺 New York: #1,810 of 115,490 inventorsTop 2%
Overall (All Time): #53,006 of 4,157,543Top 2%
51
Patents All Time

Issued Patents All Time

Showing 26–50 of 51 patents

Patent #TitleCo-InventorsDate
5466684 7-(substituted)-9-[(substituted glycyl)amido]-6-demethyl-6-deoxytetracyclines Ving J. Lee, Raymond T. Testa 1995-11-14
5457096 7-(substituted)-8-(substituted)-9-[(substituted glycyl)amido]-6-demethyl-6-deoxytetracyclines Ving J. Lee, Joseph J. Hlavka, Raymond T. Testa 1995-10-10
5442059 9-[(substituted glycyl)amido)]-6-demethyl-6-deoxytetracyclines Ving J. Lee, Raymond T. Testa 1995-08-15
5430162 7-(substituted)-8-(substituted)-9-substituted amino)-6-demethyl-6-deoxytetracyclines Ving J. Lee, Joseph J. Hlavka, Raymond T. Testa 1995-07-04
5420272 7-(substituted)-8-(substituted)-9-](substituted glycyl)amido]-6-demethyl-6-deoxytetracyclines Ving J. Lee, Joseph J. Hlavka, Raymond T. Testa 1995-05-30
5411983 Certain hyrdoxy-phosphinyl-oxy-phenylmethyl-imidazolium hydroxide inner salts as PAF antagonists Allan Wissner, Robert E. Schaub 1995-05-02
5401863 9-amino-7-(substituted)-6-demethyl-6-deoxytetracyclines Joseph J. Hlavka, Yakov Gluzman, Ving J. Lee 1995-03-28
5401729 7-(substituted)-9-[(substituted glycyl)amido]-6-demethyl-6-deoxytetracyclines Ving J. Lee, Raymond T. Testa 1995-03-28
5386041 7-(substituted)-8-(substituted)-9-[(substituted glycyl) amido]-6-demethyl-6-deoxytetracyclines Ving J. Lee, Joseph J. Hlavka, Raymond T. Testa 1995-01-31
5380888 7-(substituted)-9-[(substituted glycyl)amido]-6-demethyl-6-deoxytetracyclines Ving J. Lee, Raymond T. Testa 1995-01-10
5328902 7-(substituted)-9-[(substituted glycyl)amido]-6-demethyl-6-deoxytetracyclines Ving J. Lee, Raymond T. Testa 1994-07-12
5326759 9-amino-7-(substituted)-6-demethyl-6-deoxytetracyclines Joseph J. Hlavka, Yakov Gluzman, Ving J. Lee 1994-07-05
5284963 Method of producing 7-(substituted)-9-[(substituted glycyl)-amidol]-6-demethyl-6-deoxytetra-cyclines Ving J. Lee 1994-02-08
5281628 9-amino-7-(substituted)-6-demethyl-6-deoxytetracyclines Joseph J. Hlavka, Yakov Gluzman, Ving J. Lee 1994-01-25
5248797 Method for the production of 9-amino-6-demethyl-6-deoxytetracycline 1993-09-28
5234918 Certain phosphinyl-oxy-phenyl-methyl-pyridinium-hydroxide inner salts useful as antagonists of PAF Allan Wissner, Robert E. Schaub 1993-08-10
5215975 Certain hydroxy-phosphinyl-oxy-phenyl methyl-thiazolium hydroxide inner salts as PAF antagonists Allan Wissner, Robert E. Schaub 1993-06-01
5210193 Piperazine derivatives Joseph P. Joseph, Carl Bernard Ziegler, Daniel B. Moran, Yang-I Lin 1993-05-11
4981989 Antihypertensive phosphate derivatives and intermediates thereof Allan Wissner, Robert E. Schaub 1991-01-01
4940710 7-(substituted)piperaziny l-1-ethyl-6-fluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acids Joseph P. Joseph, Carl Bernard Ziegler, Daniel B. Moran, Yang-I Lin 1990-07-10
4897385 Antihypertensive phosphate derivatives Allan Wissner 1990-01-30
4894367 Antihypertensive phosphate derivatives Allan Wissner, Robert E. Schaub 1990-01-16
4883816 Antihypertensive derivatives Allan Wissner, Robert E. Schaub 1989-11-28
4762942 Antihypertensive phosphate derivatives Allan Wissner, Robert E. Schaub 1988-08-09
4697031 Antihypertensive phosphate derivatives Allan Wissner 1987-09-29