Patents by Inventor Daniel A. Titus

Daniel A. Titus 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).

  • METHOD OF MAKING (S)-3-(AMINOMETHYL) -5- METHYLHEXANOIC ACID
    Publication number: 20010016665
    Abstract: A method of making (±)-3-(aminomethyl)-5-methylhexanoic acid that comprises condensing isovaleraldehyde with 1
    Type: Application
    Filed: October 5, 1999
    Publication date: August 23, 2001
    Inventors: TODD MICHEL GROTE, BRIAN KEITH HUCKABEE, THOMAS MULHERN, DENIS MARTIN SOBIERAY, ROBERT DANIEL TITUS
  • Method of making (S)-3-(aminomethyl)-5-methylhexanoic acid
    Patent number: 6046353
    Abstract: A method of making (.+-.)-3-(aminomethyl)-5-methylhexanoic acid that comprises condensing isovaleraldehyde with ##STR1## to form primarily ##STR2## reacting the ##STR3## with a cyanide source to form ##STR4## decarboxylating the ##STR5## to form ##STR6## hydrolyzing the ##STR7## with an alkali or alkaline earth metal hydroxide to form an alkali or alkaline earth metal carboxylate salt; and hydrogenating the alkali or alkaline earth metal carboxylate salt to form (.+-.)-3-(aminomethyl)-5-methylhexanoic acid, wherein R.sub.1 and R.sub.2 are the same or different and are hydrogen, C.sub.1 -C.sub.6 alkyl, aryl, benzyl, or C.sub.3 -C.sub.6 cycloalkyl. The present invention also provides a method of making (.+-.
    Type: Grant
    Filed: August 26, 1998
    Date of Patent: April 4, 2000
    Assignee: Warner-Lambert Company
    Inventors: Todd Michel Grote, Brian Keith Huckabee, Thomas Mulhern, Denis Martin Sobieray, Robert Daniel Titus
  • Method of making (S)-3-(Aminomethyl)-5-Methylhexanoic acid
    Patent number: 5840956
    Abstract: A method of making (.+-.)-3-(aminomethyl)-5-methylhexanoic acid that comprises condensing isovaleraldehyde with ##STR1## to form primarily ##STR2## reacting the ##STR3## with a cyanide source to form ##STR4## decarboxylating the ##STR5## to form ##STR6## hydrolyzing the ##STR7## with an alkali or alkaline earth metal hydroxide to form an alkali or alkaline earth metal carboxylate salt; and hydrogenating the alkali or alkaline earth metal carboxylate salt to form (.+-.)-3-(aminomethyl)-5-methylhexanoic acid, wherein R.sub.1 and R.sub.2 are the same or different and are hydrogen, C.sub.1 -C.sub.6 alkyl, aryl, benzyl, or C.sub.3 -C.sub.6 cycloalkyl. The present invention also provides a method of making (.+-.
    Type: Grant
    Filed: February 6, 1997
    Date of Patent: November 24, 1998
    Assignee: Warner-Lambert Company
    Inventors: Todd Michel Grote, Brian Keith Huckabee, Thomas Mulhern, Denis Martin Sobieray, Robert Daniel Titus
  • Self-test device and method having an amplifier converted into an oscillator
    Patent number: 4864639
    Abstract: An FM receiver is self tested by connecting a positive feedback network in circuit with a wideband, front end r.f. amplifier of the receiver, so that the amplifier is converted into an oscillator. R.f. and i.f. characteristics of the receiver are determined by comparing the amplitude of an i.f. signal with a predetermined reference value while the amplifier is converted to an oscillator. Noise characteristics of the receiver are determined by comparing the amplitude of an audio frequency signal of the receiver with a predetermined value while the amplifier is converted to an oscillator and the amplifier derives an unmodulated r.f. output. Baseband characteristics of the receiver are determined by varying a reactance in the positive feedback path to impose FM on r.f. oscillations derived by the amplifier and by comparing the amplitude of the output of the audio frequency amplifier with a predetermined value.
    Type: Grant
    Filed: September 28, 1987
    Date of Patent: September 5, 1989
    Assignee: Cincinnati Electronics Corporation
    Inventors: Mark A. Dapore, Daniel A. Titus