Patents by Inventor Rainer Haeckel

Rainer Haeckel 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 extracting human saliva
    Patent number: 4774962
    Abstract: In a method of extracting human saliva a resilient absorbent inert body is chewed by a person and is subsequently introduced into a centrifuge tubule (11) provided with an apertured floor (13). The centrifuge tubule (11) is introduced into a centrifuge and subjected to a spinning process, whereupon the saliva is pressed out of the resilient body (12) and passes through the floor (13) into the lower part of the centrifuge tubule (11).
    Type: Grant
    Filed: September 23, 1986
    Date of Patent: October 4, 1988
    Assignee: Walter Sarstedt Kunststoff-Spritzgusswerk
    Inventors: Peter Hebel, Rainer Haeckel
  • Hypoglycaemically active 2-alkyl- or -alkenyl-hydrazono propionic acid derivatives
    Patent number: 4206231
    Abstract: A 2-hydrazonopropionic acid derivative of the formula ##STR1## wherein R is an aliphatic hydrocarbon radical, andX is a valency bond or a divalent aliphatic hydrocarbon radical containing up to 4 carbon atoms, with the proviso that when X is a valency bond, R cannot be saturated cycloalkyl, ora physiologically compatible salt, lower alkyl ester or amide thereof, which exhibit hypoglycaemic activity.
    Type: Grant
    Filed: August 17, 1978
    Date of Patent: June 3, 1980
    Assignee: Boehringer Mannheim GmbH
    Inventors: Rainer Haeckel, Michael Oellerich, Ruth Heerdt, Manfred Hubner, Felix H. Schmidt
  • Procedure for the quantitative determination of hydrogen peroxide concentration in aqueous solutions
    Patent number: 4202938
    Abstract: A novel procedure for the quantitative determination of hydrogen peroxide concentration in aqueous solutions is described. This is characterized by reacting hydrogen peroxide with an alcohol in the presence of the catalyst catalase and by reacting the resulting aldehyde in the presence of aldehyde dehydrogenase with NAD or NADP followed by determination of NADH or NADPH formed.
    Type: Grant
    Filed: December 6, 1977
    Date of Patent: May 13, 1980
    Assignee: Human Gesellschaft mbH fur Biotopanalytic und Biotopschutz
    Inventors: Rainer Haeckel, Fritz Heinz
  • Hypoglycaemically active 2-(phenylalkyl- or -alkenyl hydrazono)-propionic acid derivatives
    Patent number: 4136196
    Abstract: A 2-hydrazono-propionic acid derivative of the formula ##STR1## wherein R.sub.1 and R.sub.2, each independently is hydrogen, halogen, trifluoromethyl, alkyl, hydroxyl, acyloxy or alkoxy or together are methylenedioxy, andX is an aliphatic hydrocarbon radical containing 2-4 carbon atoms and is optionally substituted by an alkyl radical in the .beta.- or .gamma.-position to the nitrogen atom,Or a physiologically compatible salt, ester or amide thereof, which exhibit hypoglycaemically activity.
    Type: Grant
    Filed: September 22, 1977
    Date of Patent: January 23, 1979
    Assignee: Boehringer Mannheim GmbH
    Inventors: Rainer Haeckel, Michael Oellerich, Ruth Heerdt, Manfred Hubner, Hans Kuhnle
  • Capillary vessel for blood removal
    Patent number: 4007639
    Abstract: A capillary vessel for blood comprises a nozzle of capillary diameter, with a remaining portion widened of size such that a micropipette can be inserted therein, the end of the nozzle being closable with a plug.
    Type: Grant
    Filed: August 14, 1975
    Date of Patent: February 15, 1977
    Assignee: Firma Walter Sarstedt Kunststoff-Spritzgusswerk
    Inventor: Rainer Haeckel