Patents by Inventor Claus Gutzschebauch

Claus Gutzschebauch 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).

  • Process of stabilization of anhydrous dibasic calcium phosphate against fluorine ions with cyclic aminophosphonic acids
    Patent number: 4130630
    Abstract: A process for stabilizing anhydrous dibasic calcium phosphate against reaction with fluorine ions comprising treating an aqueous suspension of anhydrous dibasic calcium phosphate at a pH of from 5 to 10 with a cyclic aminophosphonic acid of the formula ##STR1## WHEREIN N IS AN INTEGER FROM 1 TO 3, OR A WATER-SOLUBLE SALT THEREOF, IN AN AMOUNT OF FROM 0.01% TO 5% BY WEIGHT WITH REFERENCE TO THE ANHYDROUS DIBASIC CALCIUM PHOSPHATE; AS WELL AS TOOTH CLEANING PREPARATIONS CONTAINING THE STABILIZED ANHYDROUS DIBASIC CALCIUM PHOSPHATE.
    Type: Grant
    Filed: December 1, 1975
    Date of Patent: December 19, 1978
    Assignee: Henkel Kommanditgesellschaft auf Aktien (Henkel KGaA)
    Inventors: Walter Ploger, Claus Gutzschebauch
  • Process of stabilization of anhydrous dibasic calcium phosphate against fluorine ions with azacycloalkane-2,2-diphosphonic acids
    Patent number: 4108961
    Abstract: A process for stabilizing anhydrous dibasic calcium phosphate against reaction with fluorine ions comprising treating an aqueous suspension of anhydrous dibasic calcium phosphate at a pH of from 5 to 10 with an azacycloalkane-2,2-diphosphonic acid of the formula ##STR1## wherein n is an integer from 3 to 5, or a water-soluble salt thereof, in an amount of from 0.01% to 5% by weight with reference to the anhydrous dibasic calcium phosphate; as well as tooth cleaning preparation containing the stabilized anhydrous dibasic calcium phosphate.RELATED ARTAnhydrous dibasic calcium phosphate having the formula CaHPO.sub.4 is a polishing substance frequently utilized in tooth cleaning preparations as, for example, toothpastes and powders. For this purpose it may be used alone or in admixture with other polishing substances as, for example, silica gel or plastics cleaning substances.
    Type: Grant
    Filed: December 1, 1975
    Date of Patent: August 22, 1978
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Walter Ploger, Claus Gutzschebauch
  • Process of stabilization of anhydrous dibasic calcium phosphate against fluorine ions with 3-amino-1-hydroxypropane-1,1-diphosphonic acid
    Patent number: 4108962
    Abstract: A process for stabilizing anhydrous dibasic calcium phosphate against reaction with fluorine ions comprising treating an aqueous suspension of anhydrous dibasic calcium phosphate at a pH of from 5 to 10 with 3-amino-1-hydroxypropane-1,1-diphosphonic acid, or a water-soluble salt thereof, in an amount of from 0.01% to 5% by weight with reference to the anhydrous dibasic calcium phosphate; as well as tooth cleaning preparations containing the stabilized anhydrous dibasic calcium phosphate.
    Type: Grant
    Filed: December 1, 1975
    Date of Patent: August 22, 1978
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Walter Ploger, Claus Gutzschebauch