Patents Assigned to Landec Corporation
  • Publication number: 20170058143
    Abstract: A coated floor comprising (1) a flooring substrate, and (2) a solid SCC polymer coating which is adjacent to the substrate and which comprises a sidechain crystalline polymer (SCC polymer) which has now an onset of melting temperature, T0, of at least 27° C. and a peak melting temperature (Tp) of at most 120° C. The SCC polymer coating can be an exterior coating or can be covered by one or more exterior coatings, for example of a commercial flooring finish.
    Type: Application
    Filed: August 26, 2016
    Publication date: March 2, 2017
    Applicant: Landec Corporation
    Inventors: Steven Bitler, Julian E. Schafer
  • Publication number: 20150219505
    Abstract: A thermochromic indicator includes a coating on the substrate. The coating comprising a solid crystalline particles having a melting point of 0-130° C. At temperatures below the melting point, the coating is opaque. At temperatures above the melting point, the coating becomes translucent. The change in opacity can be reversible or irreversible.
    Type: Application
    Filed: December 15, 2014
    Publication date: August 6, 2015
    Applicant: Landec Corporation
    Inventors: Robert Parker, Julian E. Shafer, Steven P. Bitler
  • Patent number: 8911861
    Abstract: A thermochromic indicator includes a coating on the substrate. The coating comprising a solid crystalline particles having a melting point of 0-130° C. At temperatures below the melting point, the coating is opaque. At temperatures above the melting point, the coating becomes translucent. The change in opacity can be reversible or irreversible.
    Type: Grant
    Filed: December 11, 2009
    Date of Patent: December 16, 2014
    Assignee: Landec Corporation
    Inventors: Robert Parker, Julian E. Schafer, Steven P. Bitler
  • Publication number: 20140262262
    Abstract: This invention discloses articles, in the form of particles to small granules to macro sized objects, capable of the controlled release of active ingredients (AI) from a mixture as a solid solution, a matrix or an encapsulated system containing AI and one or more of polymers, additives and/or carriers. The invention also covers additional surface coatings on those articles to further reduce the rate of release of AI. Finally, methods for producing these articles and treating the oil field well and other segments of the oil industry, for example piping, storage tank, and refinery locations, are introduced. The claimed articles can be used as is or mixed with other oil filed components or system, for example proppant fluid, in oil field applications.
    Type: Application
    Filed: March 13, 2014
    Publication date: September 18, 2014
    Applicant: Landec Corporation
    Inventors: Qiang Zheng, Damian Hajduk, Steven P. Bitler
  • Publication number: 20130243839
    Abstract: The invention relates to active particles, including core-shell particles, having low burst, controllable, sustained release which are useful for coating seeds. The active particles can also be used in sprayable and dry formulations for treating soil or plants. The particulate coating can also contain inert organic or inorganic material. The invention also relates to methods for preparing the active particles. The methods include: adding additional material to core particles to form a shell, removing active ingredient from a core surface to create an active-depleted shell, and crosslinking the outer layers of a core to form a shell.
    Type: Application
    Filed: August 8, 2012
    Publication date: September 19, 2013
    Applicant: Landec Corporation
    Inventors: David D. Taft, Damian Hajduk, Natarajan Balachander, Xinhua Zong, Qiang Zheng
  • Patent number: 8529922
    Abstract: PLGA, PLA and PGA polymers which have crystallinity resulting from the presence of long chain alkyl groups in terminal units. The polymers are particularly useful for drug delivery.
    Type: Grant
    Filed: February 14, 2012
    Date of Patent: September 10, 2013
    Assignee: Landec Corporation
    Inventors: David Taft, Stelios Tzannis, Wei-Guo Dai, Sandra Ottensmann, Steven Bitler, Qiang Zheng, Adam Bell
  • Patent number: 8524259
    Abstract: Systems and methods for delivering release materials, for example drugs and other bioactive materials. Crystalline polymeric systems, referred to as CYC carriers, are associated with the release materials, through chemical bonding or through physical association. The crystallinity of the CYC carriers results from the presence of crystallizable side chains, for example long chain n-alkyl moieties, which results in relatively low and sharp melting temperatures. One class of CYC carriers, referred to as CYSC polymers, have a majority of the crystallizable side chains pendant from the polymer backbone. Another class of CYC carriers referred to as ECC polymers, have a majority of the crystallizable side chains attached to terminal units of the polymer backbone. The ECC polymers can for example be obtained by modification of PLGA polymers. The CYC carriers in another class of non-polymeric.
    Type: Grant
    Filed: December 3, 2008
    Date of Patent: September 3, 2013
    Assignee: Landec Corporation
    Inventors: David D. Taft, Steven Bitler, Qiang Zheng, Stelios Tzannis, Adam Bell, Wei-Guo Dai, Sandra N. Ottensmann, Natarajan Balachander
  • Publication number: 20130216696
    Abstract: The invention relates to active particles, including core-shell particles, having low burst, controllable, sustained release which are useful for coating seeds. The active particles can also be used in sprayable and dry formulations for treating soil or plants. The particulate coating can also contain inert organic or inorganic material. The invention also relates to methods for preparing the active particles. The methods include: adding additional material to core particles to form a shell, removing active ingredient from a core surface to create an active-depleted shell, and crosslinking the outer layers of a core to form a shell.
    Type: Application
    Filed: March 15, 2013
    Publication date: August 22, 2013
    Applicant: Landec Corporation
    Inventors: David D. Taft, Damian Hajduk, Natarajan Balachander, Xinhua Zong, Qiang Zheng
  • Publication number: 20130195775
    Abstract: Ionic and ionogenic comb copolymers are disclosed along with personal care products that employ them as a modifier that results in increased sensory attributes and increased effectiveness in the deposition of actives and can also act as a thickening agent. The copolymer includes one or more repeating units derived from olefinically unsaturated anionic or anionogenic or zwitterionic comonomers, and one or more repeating units having the formula in which Y is a moiety forming part of a copolymer backbone, Z is a moiety that exhibits association with other Z moieties or with other moieties within the ultimate formulation in which the copolymer will be employed, and b is a bond or moiety that links the Z moiety to the Y moiety. In certain embodiments, the copolymer also includes repeating units derived from acrylamide monomers, olefinically unsaturated hydrophilic monomers or other olefinically unsaturated monomers.
    Type: Application
    Filed: August 3, 2012
    Publication date: August 1, 2013
    Applicants: LANDEC CORPORATION, AIR PRODUCTS AND CHEMICALS, INC.
    Inventors: Richard Joseph Goddard, Mussarat Noor, Julian Everett Schafer, Steven Paul Bitler, David Dakin Taft, Shiying Zheng
  • Patent number: 8399007
    Abstract: Methods for making formulations of drugs and crystalline side chain polymers which formulations provide controlled and/or sustained release drug formulations.
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: March 19, 2013
    Assignee: Landec Corporation
    Inventors: David Taft, Stelios Tzannis, Wei-Guo Dai, Sandra Ottensmann, Steven Bitler, Qiang Zheng, Adam Bell
  • Publication number: 20120142581
    Abstract: PLGA, PLA and PGA polymers which have crystallinity resulting from the presence of long chain alkyl groups in terminal units. The polymers are particularly useful for drug delivery.
    Type: Application
    Filed: February 14, 2012
    Publication date: June 7, 2012
    Applicant: Landec Corporation
    Inventors: DAVID TAFT, STELIOS TZANNIS, WEI-GUO DAI, SANDRA OTTENSMANN, STEVEN BITLER, QIANG ZHENG, ADAM BELL
  • Publication number: 20120088659
    Abstract: Compositions for the controlled delivery of active ingredients, for example, drugs, cosmetic materials, and agricultural materials. The compositions include a multiplicity of particles, each of the particles comprising (1) a microstructure comprising a semicrystalline polymer which has a peak melting temperature, Tp, of at least 20° C., and (2) the active ingredient. The microstructure comprises (i) crystalline domains of the semicrystalline polymer, the crystalline domains being separate from each other, and (ii) amorphous domains of the semicrystalline polymer, the amorphous domains providing a multiplicity of tortuous paths between the crystalline domains. At least part of the active ingredient is present in the amorphous domains. One of many valuable uses for the compositions is to provide a coating on a seed, for example a coating containing one or more of an insecticide, a fungicide, a nutrient, a biotic, a growth regulator and an herbicide.
    Type: Application
    Filed: June 4, 2010
    Publication date: April 12, 2012
    Applicant: Landec Corporation
    Inventors: David Taft, Steven Bitler, Qiang Zheng, Natarajan Balanchander, Damian Hadjuk
  • Publication number: 20120082709
    Abstract: Compositions for delivering release materials, for example drugs, agricultural materials, other bioactive materials, cosmetic materials, organic or inorganic compounds which take part in or catalyse a chemical reaction, a fragrance-emitting material for a vaporizer, or a lubricating material. The release material is associated with a crystalline carrier. The carrier may be a crystalline polymer containing a plurality of crystalline groups or a crystalline monomer which contains a single crystalline group, the crystalline group preferably comprising a straight chain polymethylene radical containing at least 16 carbon atoms. Some of the carriers are obtained by modifying hyaluronic acid, collagen, gelatin, a polysaccharide, a carbohydrate or cyclodextran. The release material may contain a similar crystalline group, for example may be an active compound which has been modified to introduce a crystalline group.
    Type: Application
    Filed: June 11, 2010
    Publication date: April 5, 2012
    Applicant: Landec Corporation
    Inventors: David D. Taft, Stephen P. Bitler, Qiang Zheng, Natarajan Balanchander, Sandra N. Ottensman
  • Patent number: 8114883
    Abstract: Delivery of drugs in association with PLGA polymers which have crystallinity resulting from the presence of long chain alkyl groups in terminal units.
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: February 14, 2012
    Assignee: Landec Corporation
    Inventors: David Taft, Stelios Tzannis, Wei-Guo Dai, Sandra Ottensmann, Steven Bitler, Qiang Zheng, Adam Bell
  • Patent number: 8092848
    Abstract: Packaging of respiring biological materials, particularly bananas and other fruits, in sealed containers. The containers preferably include a gas-permeable membrane comprising (1) a microporous film, and (2) a polymeric coating on the microporous film. Using appropriate containers and appropriate controlled atmospheres around the container, the respiring materials can be stored and/or ripened under controlled conditions. Bananas can be ripened while they are being transported, or in conventional ripening rooms without opening the containers in which they have been transported. The ripe bananas are less dehydrated and remain in a satisfactory ripened state for longer periods of time.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: January 10, 2012
    Assignee: Landec Corporation
    Inventor: Raymond Clarke
  • Patent number: 7601374
    Abstract: Packaging of respiring biological materials, particularly bananas and other fruits, in sealed containers. The containers preferably include a gas-permeable membrane comprising (1) a microporous film, and (2) a polymeric coating on the microporous film. Using appropriate containers and appropriate controlled atmospheres around the container, the respiring materials can be stored and/or ripened under controlled conditions. Bananas can be ripened while they are being transported, or in conventional ripening rooms without opening the containers in which they have been transported. The ripe bananas are less dehydrated and remain in a satisfactory ripened state for longer periods of time.
    Type: Grant
    Filed: November 20, 2001
    Date of Patent: October 13, 2009
    Assignee: Landec Corporation
    Inventor: Raymond Clarke
  • Publication number: 20090252777
    Abstract: Methods for making formulations of drugs and crystalline side chain polymers which formulations provide controlled and/or sustained release drug formulations.
    Type: Application
    Filed: September 25, 2008
    Publication date: October 8, 2009
    Applicant: Landec Corporation
    Inventors: David Taft, Stelios Tzannis, Wei-Guo Dai, Sandra Ottensmann, Steven Bitler, Qiang Zheng, Adam Bell
  • Publication number: 20090209558
    Abstract: Delivery of drugs in association with PLGA polymers which have crystallinity resulting from the presence of long chain alkyl groups in terminal units.
    Type: Application
    Filed: October 10, 2008
    Publication date: August 20, 2009
    Applicant: Landec Corporation
    Inventors: David Taft, Stelios Tzannis, Wei-Guo Dai, Sandra Ottensmann, Steven Bitler, Qiang Zheng, Adam Bell
  • Patent number: 7291389
    Abstract: Articles, particularly fibers, whose shape is dependent on temperature. The articles have a first component composed of a sharply-melting crystalline polymer and an overlapping second component. As the crystalline polymer is cooled through its melting range, the volume of the first component increases much more rapidly than the volume of the second component. As a result, the shape of the article changes. Such fibers can be incorporated into fibrous articles having temperature-dependent thermal insulation properties.
    Type: Grant
    Filed: February 12, 2004
    Date of Patent: November 6, 2007
    Assignee: Landec Corporation
    Inventors: Steven P. Bitler, Edward E. Schmitt, Quiang Zheng
  • Patent number: 7182951
    Abstract: A new vigor test is used to select seeds which, after appropriate polymeric coating, will perform well under adverse planting and growing conditions. For example, suitably coated hybrid corn seeds can be planted earlier than seeds now available, while still obtaining comparable or better yields. Particularly good results are obtained when seeds are coated with compositions comprising a side chain crystalline polymer and an amorphous polymer.
    Type: Grant
    Filed: January 29, 2003
    Date of Patent: February 27, 2007
    Assignee: Landec Corporation
    Inventors: Natarajan Balachander, Julian E. Schafer, Ray F. Stewart, David D. Taft