Patents by Inventor Ulf Skarp

Ulf Skarp 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).

  • Injection grouting
    Patent number: 7163358
    Abstract: The invention relates to the use of a composition for injection grouting obtainable by mixing an alkali metal silicate or an organic silicate, colloidal silica particles, and at least one gelling agent, wherein the weight ratio of colloidal silica to silicate is from about 2:1 to about 100:1. The invention also relates to a method of sealing a leaking part or cavity, and method of cutting off a liquid flow in a leaking part or cavity. The invention further relates to a composition for injection grouting and a method for preparing such composition.
    Type: Grant
    Filed: August 20, 2003
    Date of Patent: January 16, 2007
    Assignee: Akzo Nobel N.V.
    Inventors: Peter Greenwood, Inger Jansson, Ulf Skarp
  • Injection grouting
    Publication number: 20050079016
    Abstract: The invention relates to the use of a composition for injection grouting obtainable by mixing an alkali metal silicate or an organic silicate, colloidal silica particles, and at least one gelling agent, wherein the weight ratio of colloidal silica to silicate is from about 2:1 to about 100:1. The invention also relates to a method of sealing a leaking part or cavity, and method of cutting off a liquid flow in a leaking part or cavity. The invention further relates to a composition for injection grouting and a method for preparing such composition.
    Type: Application
    Filed: August 20, 2003
    Publication date: April 14, 2005
    Inventors: Peter Greenwood, Inger Jansson, Ulf Skarp
  • Sealing composition and its use
    Patent number: 6869256
    Abstract: A method for sealing rock or soil comprising inserting a sealing composition obtained by mixing a silica sol and at least one gelling agent, wherein the silica sol has an S-value higher than about 72%, a method for preparing the sealing composition and the composition obtained from the method.
    Type: Grant
    Filed: March 26, 2003
    Date of Patent: March 22, 2005
    Assignee: Akzo Nobel N.V.
    Inventors: Peter Greenwood, Inger Jansson, Ulf Skarp
  • Sealing composition and its use
    Patent number: 6857824
    Abstract: The present invention relates to a method for sealing rock or soil comprising inserting a sealing composition obtained by mixing a silica sol and at least one gelling agent, wherein the silica sol has an S-value higher than about 72%, a method for preparing the sealing composition and the composition obtained from the method.
    Type: Grant
    Filed: October 16, 2002
    Date of Patent: February 22, 2005
    Assignee: Akzo Nobel N.V.
    Inventors: Peter Greenwood, Inger Jansson, Ulf Skarp
  • Construction material
    Patent number: 6800130
    Abstract: The invention relates to a construction material comprising a hydraulic binder, water, and an aluminum-modified colloidal silica. The invention also relates to a method for preparing such materials and the use thereof.
    Type: Grant
    Filed: February 3, 2003
    Date of Patent: October 5, 2004
    Assignee: Akzo Nobel N.V.
    Inventors: Peter Greenwood, Hans Bergqvist, Ulf Skarp
  • Mixture of silica sols
    Patent number: 6764543
    Abstract: The invention concerns silica sol mixture comprising a first silica sol having a broad particle size distribution, the relative standard deviation being at least about 30% by numbers, and a second silica sol having a narrow particle size distribution having a relative standard deviation lower than about 15% by numbers. The invention also concerns a method for preparing a silica sol mixture and use thereof. The invention further concerns a concrete composition comprising a silica sol mixture and a method for preparing such composition.
    Type: Grant
    Filed: April 11, 2003
    Date of Patent: July 20, 2004
    Assignee: Akzo Nobel N.V.
    Inventors: Peter Greenwood, Hans Bergqvist, Ulf Skarp
  • Construction material
    Publication number: 20040039088
    Abstract: The invention relates to a construction material comprising a hydraulic binder, water, and an aluminium-modified colloidal silica. The invention also relates to a method for preparing such material and the use thereof.
    Type: Application
    Filed: February 3, 2003
    Publication date: February 26, 2004
    Inventors: Peter Greenwood, Hans Bergqvist, Ulf Skarp
  • Mixture of silica sols
    Publication number: 20030200902
    Abstract: The invention concerns silica sol mixture comprising a first silica sol having a broad particle size distribution, the relative standard deviation being at least about 30% by numbers, and a second silica sol having a narrow particle size distribution having a relative standard deviation lower than about 15% by numbers. The invention also concerns a method for preparing a silica sol mixture and use thereof. The invention further concerns a concrete composition comprising a silica sol mixture and a method for preparing such composition.
    Type: Application
    Filed: April 11, 2003
    Publication date: October 30, 2003
    Inventors: Peter Greenwood, Hans Bergqvist, Ulf Skarp
  • Sealing composition and its use
    Publication number: 20030161692
    Abstract: The present invention relates to a method for sealing rock or soil comprising inserting a sealing composition obtained by mixing a silica sol and at least one gelling agent, wherein the silica sol has an S-value higher than about 72%, a method for preparing the sealing composition and the composition obtained from the method.
    Type: Application
    Filed: March 26, 2003
    Publication date: August 28, 2003
    Inventors: Peter Greenwood, Inger Jansson, Ulf Skarp
  • Mixture of silica sols
    Patent number: 6596250
    Abstract: The invention concerns a silica sol mixture comprising a first silica sol having a broad particle size distribution, the relative standard deviation being at least about 30% by numbers, and a second silica sol having a narrow particle size distribution having a relative standard deviation lower than about 15% by numbers. The invention also concerns a method for preparing a silica sol mixture and use thereof. The invention further concerns a concrete composition comprising a silica sol mixture and a method for preparing such composition.
    Type: Grant
    Filed: June 15, 2001
    Date of Patent: July 22, 2003
    Assignee: Akzo Nobel N.V.
    Inventors: Peter Greenwood, Hans Bergqvist, Ulf Skarp
  • Sealing composition and its use
    Publication number: 20030103814
    Abstract: The present invention relates to a method for sealing rock or soil comprising inserting a sealing composition obtained by mixing a silica sol and at least one gelling agent, wherein the silica sol has an S-value higher than about 72%, a method for preparing the sealing composition and the composition obtained from the method.
    Type: Application
    Filed: October 16, 2002
    Publication date: June 5, 2003
    Inventors: Peter Greenwood, Inger Jansson, Ulf Skarp
  • Composition and method to prepare a concrete composition
    Patent number: 6387173
    Abstract: The present invention relates to a concrete composition comprising a hydraulic binder, aggregates, water, silica sol and a superplasticiser being a polycarboxylate. The invention further involves a method for preparation thereof and use of the prepared concrete composition as high fluidity concrete.
    Type: Grant
    Filed: May 15, 2001
    Date of Patent: May 14, 2002
    Assignee: Akzo Nobel N.V.
    Inventors: Peter Greenwood, Hans Bergqvist, Ulf Skarp
  • Composition and method to prepare a concrete composition
    Publication number: 20020014187
    Abstract: The present invention relates to a concrete composition comprising a hydraulic binder, aggregates, water, silica sol and a superplasticiser being a polycarboxylate. The invention further involves a method for preparation thereof and use of the prepared concrete composition as high fluidity concrete.
    Type: Application
    Filed: May 15, 2001
    Publication date: February 7, 2002
    Inventors: Peter Greenwood, Hans Bergqvist, Ulf Skarp
  • Mixture of silica sols
    Publication number: 20020011191
    Abstract: The invention concerns a silica sol mixture comprising a first silica sol having a broad particle size distribution, the relative standard deviation being at least about 30% by numbers, and a second silica sol having a narrow particle size distribution having a relative standard deviation lower than about 15% by numbers. The invention also concerns a method for preparing a silica sol mixture and use thereof. The invention further concerns a concrete composition comprising a silica sol mixture and a method for preparing such composition.
    Type: Application
    Filed: June 15, 2001
    Publication date: January 31, 2002
    Inventors: Peter Greenwood, Hans Bergqvist, Ulf Skarp