Patents by Inventor Hubert Ernst

Hubert Ernst 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).

  • Aqueous aminomethylenephosphonic acid solutions containing organic carboxylate stabilizing agent
    Patent number: 4548757
    Abstract: Aqueous solutions of aminomethylenephosphonic acid, chiefly diethylenetriaminepenta(methylenephosphonic acid), are disclosed containing a crystallization inhibitor which is an alkali-metal salt of an organic carboxylic acid and residual hydrochloric acid originating from the manufacturing process. The equivalent molar concentration ratio of carboxylic acid salt to hydrochloric acid is greater than 1, preferably from 1.5 to 3.
    Type: Grant
    Filed: February 26, 1985
    Date of Patent: October 22, 1985
    Assignee: The Procter & Gamble Company
    Inventors: Jean Wevers, Hubert Ernst, Stephen Cassidy, Christian R. Barrat
  • Storm overflow basin
    Patent number: 4225434
    Abstract: A storm overflow basin for use, e.g. in combined sewage systems has a storage tank leading to a storm overflow unit having a restricted sewage discharge and a storm overflow, the latter being provided with a weir at which there is mounted a flap gate engaging the crest of the weir with its bottom edge and being operable by float controlled means in dependence upon the water level in the storm overflow unit, to move away from the crest of the weir when storm conditions require a controlled overflow discharge. The normal sewage discharge is provided with restriction means that are also float controlled.
    Type: Grant
    Filed: February 12, 1976
    Date of Patent: September 30, 1980
    Inventors: Wilhelm Ernst, Hubert Ernst