Patents by Inventor Edwin Leo Lempers
Edwin Leo Lempers 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).
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Patent number: 6908895Abstract: A particulate zeolite-built laundry detergent composition having a bulk density of at least 550 g/l comprising at least two different granular components containing both surfactant and builder, preferably one prepared by non-tower granulation and another spray-dried, also contains from 1 to 10 wt % citric acid admixed as a separate particulate component. The admixed citric acid improves dispensing and dissolution properties, whether or not separately admixed sodium carbonate is present.Type: GrantFiled: May 14, 2002Date of Patent: June 21, 2005Assignee: Unilever Home & Personal Care USA, division of Conopco, Inc.Inventors: Vera Johanna Bakker, Arie Krijgsman, Edwin Leo Lempers, Jasper Mol
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Publication number: 20030069162Abstract: Detergent compositions in the form of tablets used in fabric washing which incorporate most of the surfactants in particles which constitute a substantial part but not all the composition of the tablet. The organic surfactant in this particles provides a substantial part but not all of the weight of the particles. The mixture of anionic and nonionic detergent surfactants is employed wherein anionic is clearly in the majority. The balance of the composition contains a substantial proportion of material other than organic surfactant which is water-soluble.Type: ApplicationFiled: August 22, 2002Publication date: April 10, 2003Applicant: Unilever Home & Personal Care USA, Division of Conopco, Inc.Inventors: Peter William Appel, Edwin Leo Lempers, Henning Wagner
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Patent number: 6534473Abstract: Detergent tablets for use in fabric washing are made by mixing: (i) particles which contain non-soap organic surfactant and other materials, especially detergency builder, with (ii) material which is other than soap or organic surfactant and which has a solubility in water of at least 10 gm/liter at 20° C., followed by compacting the mixture into a tablet or a region of a tablet using an applied pressure in a range from 3.0 to 35 MPa. Such a pressure, used with the specified mixture, leads to tablets with good strength which also disintegrates with satisfactory speed.Type: GrantFiled: October 2, 2000Date of Patent: March 18, 2003Assignee: Unilever Patent Holdings BVInventors: Peter Willem Appel, Jelles Vincent Boskamp, James William Gordon, Marcel Van der Kraan, Edwin Leo Lempers, Henning Wagner
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Publication number: 20020198134Abstract: A particulate zeolite-built laundry detergent composition having a bulk density of at least 550 g/l comprising at least two different granular components containing both surfactant and builder, preferably one prepared by non-tower granulation and another spray-dried, also contains from 1 to 10 wt % citric acid admixed as a separate particulate component. The admixed citric acid improves dispensing and dissolution properties, whether or not separately admixed sodium carbonate is present.Type: ApplicationFiled: May 14, 2002Publication date: December 26, 2002Applicant: Unilever Home & Personal Care USA, Division of Conopco, Inc.Inventors: Vera Johanna Bakker, Arie Krijgsman, Edwin Leo Lempers, Jasper Mol
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Patent number: 6472362Abstract: Detergent compositions in the form of tablets used in fabric washing which incorporate most of the surfactants in particles which constitute a substantial part but not all the composition of the tablet. The organic surfactant in this particles provides a substantial part but not all of the weight of the particles. The mixture of anionic and nonionic detergent surfactants is employed wherein anionic is clearly in the majority. The balance of the composition contains a substantial proportion of material other than organic surfactant which is water-soluble.Type: GrantFiled: April 24, 2000Date of Patent: October 29, 2002Assignee: Unilever Home & Personal Care USA division of Conopco, Inc.Inventors: Peter William Appel, Edwin Leo Lempers, Henning Wagner
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Publication number: 20020119905Abstract: A tablet of compacted particulate cleaning composition which contains surfactant and detergency builder, and is suitable for fabric washing, also includes water-insoluble, water-swellable polymeric material, and disintegration-promoting particles containing at least 40% (by weight of the particles) of one or more materials selected from:Type: ApplicationFiled: February 8, 2002Publication date: August 29, 2002Applicant: Lever Brothers Company, Division of Conopco, Inc.Inventors: Jelles Vincent Boskamp, Edwin Leo Lempers
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Patent number: 6372707Abstract: A tablet of compacted particulate cleaning composition which contains surfactant and detergency builder, and is suitable for fabric washing, also includes water-insoluble, water-swellable polymeric material, and disintegration-promoting particles containing at least 40% (by weight of the particles) of one or more materials selected from: compounds with a water-solubility exceeding 50 grams per 100 grams water phase 1 sodium tripolyphosphate sodium tripolyphosphate which is partially hydrated so as to contain water of hydration in an amount which is at least 0.5% by weight of the sodium tripolyphosphate in the disintegration-promoting particles.Type: GrantFiled: June 4, 1998Date of Patent: April 16, 2002Assignee: Lever Brothers Company, division of Conopco, Inc.Inventors: Jelles Vincent Boskamp, Edwin Leo Lempers
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Patent number: 6358910Abstract: A tablet of compacted particulate detergent composition including surfactant and detergency builder, suitable for fabric washing, is sub-divided into a plurality of discrete regions with differing compositions. At least one region of the tablet contains a water-swellable polymer serving to promote disintegration of this region. The polymer is present in this region in a concentration greater than in at least one other region of the tablet so as to cause disintegration of the region at a greater speed than disintegration of another region of the tablet.Type: GrantFiled: June 4, 1998Date of Patent: March 19, 2002Assignee: Lever Brothers Company, divison of Conopco, Inc.Inventors: Jelles Vincent Boskamp, Cornelis Bernard Donker, Edwin Leo Lempers
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Patent number: 6301733Abstract: A process for washing laundry in a washing machine employs a receptacle for dispensing a detergent tablet. The receptacle is substantially rigid and includes a number of apertures which have an average dimension equivalent to a mesh size of between 1 and 10 mm. A solid detergent in the form of a tablet is placed in the dispensing receptacle, the latter then being placed into a washing machine along with laundry to be washed and a washing operation is carried out. After the washing operation, the device is removed from the machine and stored for subsequent use. Moreover, the invention relates to a dispensing device for carrying out this process.Type: GrantFiled: March 5, 1998Date of Patent: October 16, 2001Assignee: Lever Brothers, division of Conopco, Inc.Inventors: George Thomas Dawson, Francois Delwel, James William Gordon, Albert Cornelis de Jong, Colin Watt Kerr, Edwin Leo Lempers, Loic Marie Tardy
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Patent number: 6174848Abstract: A process for washing laundry in a washing machine employs a receptacle for dispensing detergent tablets. The receptacle comprises a loosely fitting net bag having apertures with an average mesh size of between 1 and 10 mm. One or more tablets are placed in the dispensing receptacle before being placed into a washing machine along with laundry to be washed and a washing operation is carried. After the washing operation, the device is removed from the machine and stored for subsequent use. Moreover, the invention relates to a dispensing device for carrying out this process and a use of the device in laundry washing.Type: GrantFiled: March 5, 1998Date of Patent: January 16, 2001Assignee: Lever Brothers Company, div. of Conopco Inc.Inventors: George Thomas Dawson, Francois Delwel, James William Gordon, Albert Cornelis de Jong, Colin Watt Kerr, Edwin Leo Lempers, Loic Marie Tardy
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Patent number: 5854198Abstract: In order to enhance the stability of sodium percarbonate bleach in particulate detergent compositions, crystalline aluminosilicate and a water-soluble alkali metal silicate in an amount of from 1-20% by weight based on the aluminosilicate are included in the non-spray dried base powder. In order to obtain the stabilizing effect, the crystalline aluminosilicate comprises zeolite MAP or the alkali metal silicate is homogeneously dispersed with respect to the aluminosilicate.Type: GrantFiled: March 14, 1997Date of Patent: December 29, 1998Assignee: Lever Brothers Company, Division of Conopco, Inc.Inventors: Peter Willem Appel, Theodorus Johannes Arts, Jelles Vincent Boskamp, Andrew Paul Chapple, Fredericus Cornelis Dobbe, Christophe Michel Joyeux, Carolyn Angela Lanceley, Edwin Leo Lempers, Theo Jan Osinga