Patents by Inventor Jennifer J. Robertson

Jennifer J. Robertson 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 controlling fluoride scale formation in aqueous systems
    Patent number: 5705077
    Abstract: A method of treating water to inhibit the formation of fluoride salt scale is disclosed. The method is particularly effective at inhibiting the formation and deposition of fluoride containing salts in spray water cooling systems such as steel casting systems. The method comprises introducing into the aqueous system a polyepoxysuccinic acid of the general formula: ##STR1## where n ranges from about 2 to about 11, M is hydrogen or a water soluble cation such as Na.sup.+, NH.sub.4.sup.+ or K.sup.+ and R is hydrogen, C.sub.1-4 alkyl or C.sub.1-4 substituted alkyl.
    Type: Grant
    Filed: January 31, 1996
    Date of Patent: January 6, 1998
    Assignee: BetzDearborn Inc.
    Inventor: Jennifer J. Robertson
  • High calcium tolerant deposit control method
    Patent number: 5500128
    Abstract: A method and composition for controlling deposition of scale and the like in waters having a high calcium ion content is disclosed. The composition comprises a combination of an alkylidene diphosphonic acid and a water soluble polymeric material.
    Type: Grant
    Filed: February 7, 1995
    Date of Patent: March 19, 1996
    Assignee: Betz Laboratories, Inc.
    Inventor: Jennifer J. Robertson