Patents by Inventor Cheuk Man Lee

Cheuk Man Lee has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • 9-Hydroxy-7,8,9,10-tetrahydro-6H-dibenzo[b][d]pyranones
    Patent number: 4120873
    Abstract: Compounds of the formula ##STR1## wherein R.sub.1 is methyl or R.sub.1 R.sub.1 is oxygen; R.sub.2 is alkyl or halogen substituted phenyl alkyl; and R.sub.3 is hydrogen, loweralkyl, loweralkenyl or loweralkynyl.
    Type: Grant
    Filed: July 8, 1977
    Date of Patent: October 17, 1978
    Assignee: Sharps Associates
    Inventors: Cheuk Man Lee, Raymond John Michaels
  • 10-Amino-5H-[1]benzopyrano[4,3-c]pyridines
    Patent number: 4111942
    Abstract: This invention provides compounds of the structure ##STR1## where R.sub.1 is C.sub.3 -C.sub.20 alkyl or arylalkyl; R.sub.2 is hydrogen, loweralkanoyl, loweralkylsulfonyl, loweralkoxycarbonyl, carbamoyl or ##STR2## wherein X is an alkylene group having from 2 to 4 carbon atoms; and R.sub.3 and R.sub.4 are the same or different members of the group consisting of hydrogen or loweralkyl, or R.sub.3 and R.sub.4 taken together form a 5-, 6-, or 7-member heterocyclic ring; and the pharmaceutically acceptable acid addition salts thereof.The compounds of this invention are useful as analgesics, tranquilizers and sedative-hypnotics.
    Type: Grant
    Filed: March 28, 1977
    Date of Patent: September 5, 1978
    Assignee: Abbott Laboratories
    Inventors: Cheuk Man Lee, Harold Elmer Zaugg
  • 2-(.alpha.-Amidobenzyl)-5-alkylresorcinols
    Patent number: 4083868
    Abstract: A compound of the formula ##STR1## wherein R is a C.sub.6 -C.sub.20 alkyl, arylalkyl or cycloalkyl alkyl; R' is phenyl or substituted phenyl; and X is H, halogen,N(R").sub.2where R" is H or C.sub.1 -C.sub.7 alkyl, or a group represented by the formula ##STR2## WHERE N IS AN INTEGER FROM 1 TO 4; M IS AN INTEGER FROM 1 TO 4; AND Y is CH.sub.2, O, S or NR"' where R"' is H or C.sub.1 -C.sub.7 alkyl.The compounds of this invention are useful as intraocular pressure lowering agents, i.e., anti-glaucoma agents.
    Type: Grant
    Filed: August 16, 1976
    Date of Patent: April 11, 1978
    Assignee: Abbott Laboratories
    Inventors: Harold Elmer Zaugg, Cheuk Man Lee
  • 9-Hydroxy-7,8,9,10-tetrahydro-6H, dibenzo[b][d] pyrans and pyranones
    Patent number: 4066667
    Abstract: Compounds of the formula ##STR1## wherein R.sub.1 is methyl or R.sub.1 R.sub.1 is oxygen; R.sub.2 is alkyl or halogen substituted phenyl alkyl; and R.sub.3 is hydrogen, loweralkyl, loweralkenyl or loweralkynyl.The compounds of this invention are useful as analgesics and tranquilizers.
    Type: Grant
    Filed: July 7, 1975
    Date of Patent: January 3, 1978
    Assignee: Abbott Laboratories
    Inventors: Cheuk Man Lee, Raymond John Michaels, Louis Selig Harris
  • 2-Substituted-5-alkyl resorcinols
    Patent number: 4018777
    Abstract: Covers 2-substituted-5-alkyl resorcinols represented by the formula ##STR1## wherein R.sub.1 is hydrogen or lower-alkanoyl; R.sub.2 is a straight or branched chain alkyl of 1 to 20 carbon atoms; and X is nitrogen or C-methyl.The compounds of this invention are useful as tranquilizers, analgesics, sedative-hypnotics and anticonvulsants.
    Type: Grant
    Filed: November 14, 1975
    Date of Patent: April 19, 1977
    Assignee: Abbott Laboratories
    Inventors: Harold Elmer Zaugg, Cheuk Man Lee, Raymond John Michaels, Nicholas Peter Plotnikoff