Patents by Inventor Hendrik S. Kielman

Hendrik S. Kielman 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).

  • Rinse aid
    Patent number: 4750942
    Abstract: The use of a non-plate-shaped colloid, e.g. a silica in a rinse-aid composition for use after a dishwashing operation reduces the drying time and the formation of spots on the rinsed articles when dry.
    Type: Grant
    Filed: June 30, 1987
    Date of Patent: June 14, 1988
    Assignee: Lever Brothers Company
    Inventors: Jakob van Dijk, Hendrik S. Kielman, Leendert Los, Rudolf C. Verheul
  • Machine-dishwashing compositions
    Patent number: 4620936
    Abstract: A mildly alkaline enzymatic detergent cleaning composition adapted for use in automatic dishwashing machines comprising (a) an amylolytic enzyme, (b) sodium triphosphate, (c) sodium carbonate and/or borax, (d) sodium silicate, (e) a peroxy compound bleach, (f) a stabilizing agent, and optionally but preferably (g) a proteolytic enzyme and/or (h) a low- to non-foaming nonionic surfactant and/or (i) a fatty acid having chain length of about 12-18 carbon atoms, the amounts of components (b), (c) and (d) being so adjusted that the composition will have sufficent builder and buffering capacity to maintain a solution-pH of from 9.3 to 10.8. The composition presented in the form of a particulate product is an effective machine dishwashing composition comparable to conventional highly alkaline chlorine bleach-containing products.
    Type: Grant
    Filed: August 6, 1984
    Date of Patent: November 4, 1986
    Assignee: Lever Brothers Company
    Inventors: Hendrik S. Kielman, Jan S. Bongers
  • Dishwashing compositions
    Patent number: 4597886
    Abstract: By the inclusion of an effective level of a layered clay, e.g. a synthetic hectorite, in an enzymatic dishwashing composition, the formation of spots and films on the cleaned objects is significantly reduced.
    Type: Grant
    Filed: October 12, 1984
    Date of Patent: July 1, 1986
    Assignee: Lever Brothers Company
    Inventors: Machiel Goedhart, Franciscus H. Gortemaker, Hermanus C. Kemper, Hendrik S. Kielman
  • Dishwashing compositions
    Patent number: 4591448
    Abstract: The use of a layered clay in a non-enzymatic dish-washing composition with a reduced pH of 9-11 provides for a significant reduction of spot and film formation on the cleaned articles.
    Type: Grant
    Filed: October 12, 1984
    Date of Patent: May 27, 1986
    Assignee: Lever Brothers Company
    Inventors: Machiel Goedhart, Franciscus H. Gortemaker, Hermanus C. Kemper, Hendrik S. Kielman
  • Dishwashing composition
    Patent number: 4591449
    Abstract: The use of a layered clay, e.g. a synthetic hectorite, in a non-enzymatic machine dishwashing composition provides for a significant reduction of spot and film formation.
    Type: Grant
    Filed: October 12, 1984
    Date of Patent: May 27, 1986
    Assignee: Lever Brothers Company
    Inventors: Machiel Goedhart, Franciscus H. Gortemaker, Hermanus C. Kemper, Hendrik S. Kielman
  • Enzymatic machine-dishwashing compositions
    Patent number: 4568476
    Abstract: Mildly alkaline enzymatic machine dishwashing composition comprising a detergency builder, an amylolytic enzyme, a peroxy compound bleach and optionally a proteolytic enzyme, having a pH of from 9.3 to 10.8 determined from a solution of 3 g/l of the composition in distilled water, and containing not more than 0.2% by weight, preferably not more than 0.1% by weight of chloride. The composition is non-corrosive to silverware.
    Type: Grant
    Filed: August 6, 1984
    Date of Patent: February 4, 1986
    Assignee: Lever Brothers Company
    Inventors: Hendrik S. Kielman, Jan S. Bongers