Patents by Inventor Pieter Van der Vlist
Pieter Van der Vlist 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: 6883353Abstract: A device for spot cleaning a fabric with a liquid cleaning composition, said device comprising i) at least one absorbent means for absorbing at least some of said composition from the fabric; and ii) mesh means for rubbing the fabric so that the liquid absorbed by the absorbent means from the fabric passes through the mesh means.Type: GrantFiled: April 1, 2002Date of Patent: April 26, 2005Assignee: Unilever Home & Personal Care USA divison of Conopco, Inc.Inventors: Francesca Goldoni, Jan Kevelam, Arinus Frederikus Leerink, Pieter W. Van Reeven, Pieter Van der Vlist, Wendi Hutchinson
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Patent number: 6829913Abstract: A device for spot cleaning a fabric with a liquid cleaning composition, said device comprising at least one absorbent means for absorbing at least some of said composition from the fabric wherein the ratio of the working surface and the thickness or height of the absorbent means is preferably lower than 3000 mm. In a method of use, the liquid cleaning composition is applied to the fabric and some of the composition so applied is absorbed into the absorbent means.Type: GrantFiled: April 1, 2002Date of Patent: December 14, 2004Assignee: Unilever Home & Personal Care USA, a division of Conopco, Inc.Inventors: Francesca Goldoni, Jan Kevelam, Arinus Frederikus Leerink, Pieter W. van Reeven, Pieter Van der Vlist, Wendi Hutchinson
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Publication number: 20040168275Abstract: A device for spot cleaning a fabric with a liquid cleaning composition, said device comprisingType: ApplicationFiled: April 1, 2002Publication date: September 2, 2004Applicant: Unilever Home & Personal Care USA, Division of Conopco, Inc.Inventors: Francesca Goldoni, Jan Kevelam, Arinus Frederikus Leerink, Pieter W. Van Reeven, Pieter Van der Vlist, Wendi Hutchinson
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Patent number: 6605580Abstract: A bleaching composition is provided comprising a) a bleach-effective amount of an inorganic bleaching agent; b) a bleach-compatible solvent c) 0 to 10 wt % of a surfactant; d) less than 10 wt % of a modifier; and e) an effective dry cleaning amount of densified carbon dioxide, said composition being essentially free of organic peracid or precursor thereof.Type: GrantFiled: December 20, 2000Date of Patent: August 12, 2003Assignee: Unilever Home & Personal Care USA, division of Conopco, Inc.Inventors: Dirk Johannes Bijl, Ronald Hage, Jan Kevelam, Jean Hypolites Koek, Dennis Stephen Murphy, Irene Erica Smit, Johannes Jacob Verhagen, Pieter van der Vlist
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Publication number: 20030121106Abstract: A process of cleaning a substrate, the process comprising the steps of contacting a substrate with a composition comprising at least two liquids mutually presenting a liquid-liquid interface with an interfacial tension of at least 5 mN/m and agitating the substrate and/or composition whilst they are in mutual contact, wherein the composition and/or the substrate are also subjected to ultrasound before and/or during the agitation step.Type: ApplicationFiled: November 19, 2002Publication date: July 3, 2003Applicant: Unilever Home & Personal Care USA, Division of Conopco, Inc.Inventors: Vijaya Milind Bargaje, Paul Johan Birker, Cornelis Gerhard van Kralingen, Glyn Roberts, Pieter van der Vlist, Vidur Behal
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Patent number: 6562774Abstract: A bleaching composition is provided comprising a) a bleach-effective amount of a low-active oxygen bleaching agent; b) a bleach-compatible solvent c) 0 to 10 wt % of a surfactant; d) less than 10 wt % of a modifier; and e) an effective dry cleaning amount of densified carbon dioxide, said composition being essentially free of carbon dioxide soluble organic peracid.Type: GrantFiled: December 20, 2000Date of Patent: May 13, 2003Assignee: Unilever Home & Personal Case USA, division of Conopco, Inc.Inventors: Dirk Johannes Bijl, Ronald Hage, Jan Kevelam, Jean Hypolites Koek, Dennis Stephen Murphy, Irene Erica Smit, Johannes Jacob Verhagen, Pieter Van Der Vlist
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Publication number: 20030004087Abstract: A method for spot cleaning a fabric with a liquid cleaning composition which does not require a rinse step and is suitable to clean garments while they are being worn, the method comprising the steps ofType: ApplicationFiled: April 1, 2002Publication date: January 2, 2003Applicant: Unilever Home & Personal Care USA, Division of Conopco, Inc.Inventors: Francesca Goldoni, Jan Kevelam, Arinus Frederikus Leerink, Pieter W. van Reeven, Pieter van der Vlist, Wendi Hutchinson
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Patent number: 6495502Abstract: A bleaching composition is provided for effective bleaching with a bleach catalyst at low temperatures. The bleaching composition comprises of a) from 0.05 microM to 50 mM of an organic substance which forms a complex with a transition metal; b) a source of active oxygen corresponding to 0.05 to 100 mM of active oxygen; and c) an effective amount of liquid carbon dioxide, preferably held at 25° C. or less.Type: GrantFiled: December 20, 2000Date of Patent: December 17, 2002Assignee: Unilever Home & Personal Care USA, division of Conopco, Inc.Inventors: Dirk Johannes Bijl, Ronald Hage, Jan Kevelam, Jean Hypolites Koek, Dennis Stephen Murphy, Irene Erica Smit, Johannes J. Verhagen, Pieter van der Vlist
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Publication number: 20020178507Abstract: A method and device for spot cleaning a fabric with a liquid cleaning composition is provided comprising the steps ofType: ApplicationFiled: April 1, 2002Publication date: December 5, 2002Applicant: Unilever Home & Personal Care USA, Division of Conopco, Inc.Inventors: Francesca Goldoni, Jan Kevelam, Arinus Frederikus Leerink, Pieter W. van Reeven, Pieter van der Vlist, Wendi Hutchinson
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Publication number: 20020178508Abstract: A method and device for spot cleaning a fabric with liquid cleaning composition comprising the steps ofType: ApplicationFiled: April 1, 2002Publication date: December 5, 2002Applicant: Unilever Home & Personal Care USA, Division of Conopco, Inc.Inventors: Francesca Goldoni, Jan Kevelam, Arinus Frederikus Leerink, Pieter W. van Reeven, Pieter van der Vlist, Wendi Hutchinson
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Publication number: 20020183225Abstract: A device for spot cleaning a fabric with a liquid cleaning composition a device for spot cleaning a fabric with a liquid cleaning composition suitable for multiple uses, said device comprising more than one absorbent means for absorbing at least some of the applied composition from the fabric and holding means for storing the more than one absorbent means. In a method of use, the liquid cleaning composition is applied to the fabric with an applicator and some of the composition so applied is absorbed into the absorbent means.Type: ApplicationFiled: April 1, 2002Publication date: December 5, 2002Applicant: Unilever Home & Personal Care USA, Division of Conopco, Inc.Inventors: Francesca Goldoni, Jan Kevelam, Arinus Frederikus Leerink, Pieter W. van Reeven, Pieter van der Vlist, Wendi Hutchinson
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Publication number: 20020178511Abstract: A device for spot cleaning a fabric with a liquid cleaning composition, the device comprising a reservoir for holding the composition, an applicator for applying the composition from the reservoir to the fabric and absorbent means for absorbing at least some of the composition from the fabric. In a method of use, the liquid cleaning composition is applied to the fabric with the applicator and some of the composition so applied is absorbed into the absorbent means.Type: ApplicationFiled: April 1, 2002Publication date: December 5, 2002Applicant: Unilever Home & Personal Care USA, Division of Conopco, Inc.Inventors: Francesca Goldoni, Jan Kevelam, Arinus Frederikus Leerink, Pieter W. van Reeven, Pieter van der Vlist, Wendi Hutchinson
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Publication number: 20020178510Abstract: A device for spot cleaning a fabric with a liquid cleaning composition, said device comprising at least one absorbent means for absorbing at least some of said composition from the fabric wherein the ratio of the working surface and the thickness or height of the absorbent means is preferably lower than 3000 mm. In a method of use, the liquid cleaning composition is applied to the fabric and some of the composition so applied is absorbed into the absorbent means.Type: ApplicationFiled: April 1, 2002Publication date: December 5, 2002Applicant: Unilever Home & Personal Care USA, Division of Conopco, Inc.Inventors: Francesca Goldoni, Jan Kevelam, Arinus Frederikus Leerink, Pieter W. van Reeven, Pieter van der Vlist, Wendi Hutchinson
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Patent number: 6479447Abstract: A bleaching composition is provided for effective bleaching with a bleach catalyst at low temperatures. The bleaching composition comprises of a) from 0.05 microM to 50 mM of an organic substance which forms a complex with a transition metal; b) a source of active oxygen corresponding to 0.05 to 100 mM of active oxygen; and c) an effective amount of liquid carbon dioxide.Type: GrantFiled: December 20, 2000Date of Patent: November 12, 2002Assignee: Unilever Home & Personal Care USA, division of Conopco, Inc.Inventors: Dirk Johannes Bijl, Ronald Hage, Jan Kevelam, Jean Hypolites Koek, Dennis Stephen Murphy, Irene Erica Smit, Johannes J. Verhagen, Pieter van der Vlist
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Patent number: 6440225Abstract: A method is provided for stripping a polymer film from a floor surface, comprising the steps of: (a) applying a concentrated alkaline stripper solution including an alkaline agent and a solvent, to the polymer film; (b) allowing this concentrated alkaline solution to chemically act on the polymer film during a contact time of at least 5 seconds; (c) scrubbing the polymer film with a scrubbing device while diluting the concentrated alkaline solution with water, so as to obtain a sludge; (d) vacuum cleaning the floor surface by suction of the sludge, whereby this method is carried out using one floor treating machine. This method is an integrated floor stripping procedure which is considerably more effective than known stripping methods of the prior art.Type: GrantFiled: February 16, 2000Date of Patent: August 27, 2002Assignee: Diversey Lever, Inc.Inventors: Michael Van Den Burg, Josef Jans, Frederik Jan Schepers, Rolf Semmler, Pieter Van Der Vlist
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Publication number: 20010025019Abstract: A bleaching composition is provided for effective bleaching with a bleach catalyst at low temperatures.Type: ApplicationFiled: December 20, 2000Publication date: September 27, 2001Inventors: Dirk Johannes Bijl, Ronald Hage, Jan Kevelam, Jean Hypolites Koek, Dennis Stephen Murphy, Irene Erica Smit, Johannes J. Verhagen, Pieter van der Vlist
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Publication number: 20010023237Abstract: A bleaching composition is provided comprisingType: ApplicationFiled: December 20, 2000Publication date: September 20, 2001Inventors: Dirk Johannes Bijl, Ronald Hage, Jan Kevelam, Jean Hypolites Koek, Dennis Stephen Murphy, Irene Erica Smit, Johannes Jacob Verhagen, Pieter Van Der Vlist
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Publication number: 20010023236Abstract: A bleaching composition is provided comprisingType: ApplicationFiled: December 20, 2000Publication date: September 20, 2001Inventors: Dirk Johannes Bijl, Ronald Hage, Jan Kevelam, Jean Hypolites Koek, Dennis Stephen Murphy, Irene Erica Smit, Johannes Jacob Verhagen, Pieter Van Der Vlist
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Publication number: 20010009271Abstract: A bleaching composition is provided for effective bleaching with a bleach catalyst at low temperatures.Type: ApplicationFiled: December 20, 2000Publication date: July 26, 2001Inventors: Dirk Johannes Bijl, Ronald Hage, Jan Kevelam, Jean Hypolites Koek, Dennis Stephen Murphy, Irene Erica Smit, Johannes J. Verhagen, Pieter van der Vlist
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Patent number: 4607137Abstract: In a communication network with cryptographically protected connections a unique key is used for each connection between two subscribers, so that when one or more keys fall into the hands of an unauthorized person it has no consequences for the protection of the remaining connections. In a network comprising N subscribers this implies that each participant must have N-1 keys for communication with the other participants. Such a set of N-1 keys is obtained by putting a column from a N.times.N key matrix (main diagonal empty) at the disposal of each participant. During the connection set-up the correct unique key is automatically selected by interchange of the column number. The key matrices used in the network can be regularly replaced without it being necessary to interrupt the operation of the network.Type: GrantFiled: April 13, 1984Date of Patent: August 19, 1986Assignee: U.S. Philips CorporationInventors: Cornelis J. A. Jansen, Andries J. M. van de Pas, Pieter van der Vlist, Frederik Hafkamp