Patents by Inventor Peter L. Keeling

Peter L. Keeling 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).

  • Patent number: 8030540
    Abstract: The invention provides transgenic corn seed, which expresses a gene encoding a double mutant of the E. coli glgC gene in endosperm plastids, wherein the mutant protein has a proline to aspartic acid substitution at amino acid 295 and a glutamic acid to lysine substitution at amino acid 296. The transgenic corn seed of the invention is characterized by enhanced levels of a number of amino acids and oil, when compared to isogenic corn seed, which does not express the transgene in an endosperm plastid. However, the amount of starch in the transgenic corn seed of the invention is decreased or unchanged when compared to the amount of starch in the isogenic control corn seed.
    Type: Grant
    Filed: April 21, 2005
    Date of Patent: October 4, 2011
    Assignee: BASF Plant Science GmbH
    Inventors: Hanping Guan, Deborah Wetterberg, Angela L. McKean, Peter L. Keeling
  • Publication number: 20100143532
    Abstract: The present invention provides grain, seed, feed made from the grain or seed, petfood made from the grain, and food products made from the grain. The grain may be maize grain with the following characteristics: oil burdened, elevated protein content, and low phytate levels. The combination of oil burdened, protein laden, decreased phytate characteristics in grain makes a grain that provides more calories, protein and phosphorus and other nutrients to the feeding animal. Pet foods, and animal feeds and corn food products made of the present invention will provide increased nutrition because of the increased bioavailability of the components of the grain.
    Type: Application
    Filed: December 4, 2009
    Publication date: June 10, 2010
    Applicant: BASF Plant Science Company GmbH
    Inventors: Ming-Tang Chang, Peter L. Keeling, Edward P. Wilhelm, Jerry C. Weigel
  • Patent number: 7652203
    Abstract: The present invention provides grain, seed, feed made from the grain or seed, pet food made from the grain, and food products made from the grain. The grain may be maize grain with the following characteristics: oil burdened, elevated protein content, and low phytate levels. The combination of oil burdened, protein laden, and decreased phytate characteristics in grain makes a grain that provides more calories, protein and phosphorus and other nutrients to the feeding animal. Pet foods, and animal feeds and corn food products made of the present invention will provide increased nutrition because of the increased bioavailability of the components of the grain.
    Type: Grant
    Filed: June 13, 2005
    Date of Patent: January 26, 2010
    Assignee: BASF Plant Science GmbH
    Inventors: Ming-Tang Chang, Peter L. Keeling, Edward P. Wilhelm, Jerry C. Weigel
  • Patent number: 7169982
    Abstract: This invention relates to a method of producing a starch with unique functionality in plants through mutableness, and/or using biotechnology, and/or breeding practices. Further the invention relates to the starch from maize plants and/or other plants which produce starch storing organs which contain low amylose starch which has an amylose content between 1.5% and 15% and preferably between 1.5% and 10% and most preferably 1.5 and 8%. The invention includes starch extracted from such grain due to at least one mutation induced by ethyl methanesulfonate. Additionally, the invention uses a biotechnology approach involving controlling the activity of the granule bound starch synthase enzyme in starch storing organ. The invention includes the use of the starch for its cooking, paste, and gel properties.
    Type: Grant
    Filed: October 17, 2002
    Date of Patent: January 30, 2007
    Assignee: Basf Plant Science GmbH
    Inventors: Jeffrey D. Klucinec, Peter L. Keeling, Padma Commuri, Ming-Tang Chang
  • Patent number: 7087261
    Abstract: The present invention provides grain, seed, feed made from the grain or seed, pet food made from the grain, and food products made from the grain. The grain may be maize grain with the following characteristics: oil burdened, elevated protein content, and low phytate levels. The combination of oil burdened, protein laden, decreased phytate characteristics in grain makes a grain that provides more calories, protein and phosphorus and other nutrients to the feeding animal. Pet foods, and animal feeds and corn food products made of the present invention will provide increased nutrition because of the increased bioavailability of the components of the grain.
    Type: Grant
    Filed: July 2, 2004
    Date of Patent: August 8, 2006
    Assignee: BASF Plant Science L.L.C.
    Inventors: Ming-Tang Chang, Peter L. Keeling, Edward P. Wilheim, Jerry C. Weigel
  • Patent number: 6774288
    Abstract: The present invention provides grain, seed, feed made from the grain or seed, petfood made from the grain, and food products made from the grain. The grain may be maize grain with the following characteristics: oil burdened, elevated protein content, and low phytate levels. The combination of oil burdened, protein laden, decreased phytate characteristics in grain makes a grain that provides more calories, protein and phosphorus and other nutrients to the feeding animal. Pet foods, and animal feds and corn food products made of the present invention will provide increased nutrition because of the increased bioavailability of the components of the grain.
    Type: Grant
    Filed: January 6, 2000
    Date of Patent: August 10, 2004
    Assignee: BASF Plant Science L.L.C.
    Inventors: Ming-Tang Chang, Peter L. Keeling, Edward P. Wilhelm, Jerry C. Weigel
  • Publication number: 20040107461
    Abstract: The invention relates to a method for changing the glucan chain lengths using fusion protein domains of various starch synthase enzymes in any starch or starch granule producing organism. The invention relates to identification of a GLucan ASSociation domain (herein after referred to as “GLASS” domain) of granule bound starch synthase (GBSS) used in combination with any other GLYcosyl TRransferase domain otherwise referred to as pfam00534-catalytic domain (herein after referred to as “GLYTR” domain) of one or more of any of the other starch synthase enzymes. The invention relates to identifying and using the new and surprising discovery that starch synthases are composed of at least two distinct functional domains herein after labeled as “GLASS” and “GLYTR”. More specifically, this invention relates to the genetic constructs that encode the fusions of the above domains and to the plants transformed with said constructs.
    Type: Application
    Filed: March 29, 2002
    Publication date: June 3, 2004
    Inventors: Padma Commuri, Peter L. Keeling, Nona Ramirez, Angela McKean, Zhong Gao, Hanping Guan
  • Publication number: 20030226176
    Abstract: This invention relates to hosts containing constructs with genes from the starch pathway. More typically the present invention relates to bacterial hosts that form plant like starches. Additionally the present invention relates to plant hosts that have genes from the starch pathway. The invention further relates to the starches produced by said hosts.
    Type: Application
    Filed: January 6, 2003
    Publication date: December 4, 2003
    Applicant: Exseed Genetics LLC
    Inventors: Hanping Guan, Peter L. Keeling
  • Publication number: 20030150023
    Abstract: This invention relates to a method of producing a starch with unique functionality in plants through mutagenesis, and/or using biotechnology, and/or breeding practices. Further the invention relates to the starch from maize plants and/or other plants which produce starch storing organs which contain low amylose starch which has an amylose content between 1.5% and 15% and preferrably between 1.5% and 10% and most preferrably 1.5 and 8%. The invention includes starch extracted from such grain due to at least one mutation induced by ethyl methanesulfonate. Additionally, the invention uses a biotechnology approach involving controlling the activity of the granule bound starch synthase enzyme in starch storing organ. The invention includes the use of the starch for its cooking, paste, and gel properties.
    Type: Application
    Filed: October 17, 2002
    Publication date: August 7, 2003
    Inventors: Jeffrey D. Klucinec, Peter L. Keeling, Padma Commuri, Ming-Tang Chang
  • Patent number: 6361935
    Abstract: Broadly, the present invention relates to mutating starch genes in polyploid cereal grains. Specifically, this invention concerns mutant wheat plants, mutant wheat grain and the starch therefrom.
    Type: Grant
    Filed: April 8, 1999
    Date of Patent: March 26, 2002
    Assignee: ExSeed Genetics LLC
    Inventors: Peter L. Keeling, Francie G. Dunlap, Ming Chang
  • Patent number: 6143963
    Abstract: Broadly, the present invention relates to mutating starch genes in polyploid cereal grains. Specifically, this invention concerns mutant wheat plants, mutant wheat grain and the starch therefrom.
    Type: Grant
    Filed: October 6, 1997
    Date of Patent: November 7, 2000
    Assignee: ExSeed Genetics, L.L.C.
    Inventors: Peter L. Keeling, Francie G. Dunlap, Ming Chang
  • Patent number: 6013861
    Abstract: Plants, particularly cereal plants, which have improved ability to synthesise starch at elevated or lowered temperatures and/or to synthesise starch with an altered fine structure are produced by inserting into the genome of the plant (i) a gene(s) encoding a form of an enzyme of the starch or glycogen biosynthetic pathway, particularly soluble starch synthase and/or branching enzyme and/or glycogen synthase, which display an activity which continues to increase over a temperature range over which the activity would normally be expected to decrease, and/or (ii) a gene(s) encoding sense and anti-sense constructs of enzymes of the starch biosynthetic pathway, particularly soluble starch synthase and/or branching enzyme and/or glycogen synthase, which alters the natural ratios of expression of the said enzymes or inserts enzymes with special structural characteristics which alter the natural branching pattern in starch.
    Type: Grant
    Filed: October 23, 1996
    Date of Patent: January 11, 2000
    Assignee: Zeneca Limited
    Inventors: Colin R. Bird, Philip A. Fentem, Peter L. Keeling, George Singletary