Patents by Inventor Delmar C. Timm

Delmar C. Timm 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: 6191176
    Abstract: Degradable polyesters useful in packaging, packing, agricultural, biomedical, and other applications are made by reacting amine-protected glutamic acid with diols or epoxy compounds. The polyesters include a thermoplastic main chain aliphatic polyester, a thermoset heterochain polyester and a thermoset heterochain aromatic polyester. Each of these polyesters can be hydrolyzed into monomers using a biological catalyst such as the enzyme lipase. The thermoplastic main chain aliphatic polyester and the thermoset heterochain polyester can be degraded to respiratory gases and biomass with a mixed culture of Rhizopus chinesis, Rhizopus delemar, Penecillium pinophilum, Aspergillus niger and Pseudomonas aeruginosa microorganisms. This mixed culture of microorganisms can also be used to degrade other polyesters containing hydrolyzable backbone polyesters.
    Type: Grant
    Filed: February 16, 2000
    Date of Patent: February 20, 2001
    Assignee: Board of Regents of University of Nebraska
    Inventors: Raef M. Tadros, Delmar C. Timm
  • Patent number: 6121033
    Abstract: Degradable polyesters useful in packaging, packing, agricultural, biomedical, and other applications are made by reacting amine-protected glutamic acid with diols or epoxy compounds. The polyesters include a thermoplastic main chain aliphatic polyester, a thermoset heterochain polyester and a thermoset heterochain aromatic polyester. Each of these polyesters can be hydrolyzed into monomers using a biological catalyst such as the enzyme lipase. The thermoplastic main chain aliphatic polyester and the thermoset heterochain polyester can be degraded to respiratory gases and biomass with a mixed culture of Rhizopus chinesis, Rhizopus delemar, Penecillium pinophilum, Aspergillus niger and Pseudomonas aeruginosa microorganisms. This mixed culture of microorganisms can also be used to degrade other polyesters containing hydrolyzable backbone polyesters.
    Type: Grant
    Filed: July 21, 1999
    Date of Patent: September 19, 2000
    Assignee: The Board of Regents of the University of Nebraska
    Inventors: Raef M. Tadros, Delmar C. Timm
  • Patent number: 5990266
    Abstract: Degradable polyesters useful in packaging, packing, agricultural, biomedical, and other applications are made by reacting amine-protected glutamic acid with diols or epoxy compounds. The polyesters include a thermoplastic main chain aliphatic polyester, a thermoset heterochain polyester and a thermoset heterochain aromatic polyester. Each of these polyesters can be hydrolyzed into monomers using a biological catalyst such as the enzyme lipase. The thermoplastic main chain aliphatic polyester and the thermoset heterochain polyester can be degraded to respiratory gases and biomass with a mixed culture of Rhizopus, chinesis, Rhizopus delemar, Penecillium pinophilum, Aspergillus niger and Pseudomonas aeruginosa microorganisms. This mixed culture of microorganisms can also be used to degrade other polyesters containing hydrolyzable backbone polyesters.
    Type: Grant
    Filed: December 2, 1998
    Date of Patent: November 23, 1999
    Assignee: University of Nebraska
    Inventors: Raef M. Tadros, Delmar C. Timm
  • Patent number: 5506285
    Abstract: To form a binder from naturally occurring products without extraction or purification steps, the binder utilizes proteins from the germ or endosperm of cereal grasses or from the seed of buckwheat, oil seed plants, Amaranthus or leguminous plants or from leaves. The protein has a thermoplastic microstructure with linear polymers of moleculer weight of at least 2,000 linked with peptide linkages of at least 50 in number. The naturally occurring product is ground or milled without further processing and thus includes carbohydrates, particularly as cellulose, and possibly fats, yeast or materials yielding ash upon burning, with the carbohydrates being at least 5 percent of the proteins by weight. The binder may include some initiators or catalysts to polymerize fats or other initiators or catalysts to polymerize proteins.
    Type: Grant
    Filed: June 17, 1994
    Date of Patent: April 9, 1996
    Assignee: The Board of Regents of the University of Nebraska
    Inventors: Delmar C. Timm, Ayodeji J. Ayorinde, Harold E. Egger
  • Patent number: 5374670
    Abstract: To form a binder from naturally occurring products without extraction or purification steps, the binder utilizes proteins from the germ or endosperm of cereal grasses or from the seed of buckwheat, oil seed plants, Amaranthus or leguminous plants or from leaves. The protein has a thermoplastic microstructure with linear polymers of molecular weight of at least 2000 linked with peptide linkages of at least 50 in number. The naturally occurring product is ground or milled without further processing and thus includes carbohydrates, particularly as cellulose, and possibly fats, yeast or materials yielding ash upon burning, with the carbohydrates being at least 5% of the proteins by weight. The binder may include some initiators or catalysts to polymerize fats or other initiators or catalysts to polymerize proteins.
    Type: Grant
    Filed: October 28, 1993
    Date of Patent: December 20, 1994
    Assignee: The Board of Regents of the University of Nebraska
    Inventors: Ayodeji J. Ayorinde, Harold E. Egger, Delmar C. Timm
  • Patent number: 5344871
    Abstract: To form a binder from naturally occurring products without extraction or purification steps, the binder utilizes proteins from the germ or endosperm of cereal grasses or from the seed of buckwheat, oil seed plants, Amaranthus or leguminous plants or from leaves. The protein has a thermoplastic microstructure with linear polymers of moleculer weight of at least 2,000 linked with peptide linkages of at least 50 in number. The naturally occurring product is ground or milled without further processing and thus includes carbohydrates, particularly as cellulose, and possibly fats, yeast or materials yielding ash upon burning, with the carbohydrates being at least 5 percent of the proteins by weight. The binder may include some initiators or catalysts to polymerize fats or other initiators or catalysts to polymerize proteins.
    Type: Grant
    Filed: September 29, 1992
    Date of Patent: September 6, 1994
    Assignee: The Board of Regents of the University of Nebraska
    Inventors: Delmar C. Timm, Ayodeji Ayorinde, Harold E. Egger
  • Patent number: 5153242
    Abstract: To form a composition board from naturally occurring products without extraction or purification steps, the naturally occurring material is held together with a binder that is added or is already within the naturally occurring material. In one embodiment, the binder utilizes proteins from the germ or endosperm of cereal grasses or from the seed of buckwheat, oil seed plants, Amaranthus or leguminous plants or from leaves. The protein has a thermoplastic microstructure with linear polymers of molecular weight of at least 2,000 linked with peptide linkages of at least 50 in number. The naturally occurring product is ground or milled without further processing and thus includes carbohydrates, particularly as cellulose, and possibly fats, yeast or materials yielding ash upon burning, with the carbohydrates being at least 5 percent of the proteins by weight. The binder may include some initiators or catalysts to polymerize fats or other initiators or catalysts to polymerize proteins.
    Type: Grant
    Filed: February 21, 1991
    Date of Patent: October 6, 1992
    Assignee: The Board of Regents of the University of Nebraska
    Inventors: Delmar C. Timm, Ayodeji J. Ayorinde, Harold E. Egger