Patents Assigned to Landec Corporation
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Publication number: 20170058143Abstract: 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: ApplicationFiled: August 26, 2016Publication date: March 2, 2017Applicant: Landec CorporationInventors: Steven Bitler, Julian E. Schafer
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Publication number: 20150219505Abstract: 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: ApplicationFiled: December 15, 2014Publication date: August 6, 2015Applicant: Landec CorporationInventors: Robert Parker, Julian E. Shafer, Steven P. Bitler
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Patent number: 8911861Abstract: 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: GrantFiled: December 11, 2009Date of Patent: December 16, 2014Assignee: Landec CorporationInventors: Robert Parker, Julian E. Schafer, Steven P. Bitler
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Publication number: 20140262262Abstract: 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: ApplicationFiled: March 13, 2014Publication date: September 18, 2014Applicant: Landec CorporationInventors: Qiang Zheng, Damian Hajduk, Steven P. Bitler
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Publication number: 20130243839Abstract: 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: ApplicationFiled: August 8, 2012Publication date: September 19, 2013Applicant: Landec CorporationInventors: David D. Taft, Damian Hajduk, Natarajan Balachander, Xinhua Zong, Qiang Zheng
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Patent number: 8529922Abstract: 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: GrantFiled: February 14, 2012Date of Patent: September 10, 2013Assignee: Landec CorporationInventors: David Taft, Stelios Tzannis, Wei-Guo Dai, Sandra Ottensmann, Steven Bitler, Qiang Zheng, Adam Bell
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Patent number: 8524259Abstract: 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: GrantFiled: December 3, 2008Date of Patent: September 3, 2013Assignee: Landec CorporationInventors: David D. Taft, Steven Bitler, Qiang Zheng, Stelios Tzannis, Adam Bell, Wei-Guo Dai, Sandra N. Ottensmann, Natarajan Balachander
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Publication number: 20130216696Abstract: 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: ApplicationFiled: March 15, 2013Publication date: August 22, 2013Applicant: Landec CorporationInventors: David D. Taft, Damian Hajduk, Natarajan Balachander, Xinhua Zong, Qiang Zheng
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Publication number: 20130195775Abstract: 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: ApplicationFiled: August 3, 2012Publication date: August 1, 2013Applicants: LANDEC CORPORATION, AIR PRODUCTS AND CHEMICALS, INC.Inventors: Richard Joseph Goddard, Mussarat Noor, Julian Everett Schafer, Steven Paul Bitler, David Dakin Taft, Shiying Zheng
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Patent number: 8399007Abstract: Methods for making formulations of drugs and crystalline side chain polymers which formulations provide controlled and/or sustained release drug formulations.Type: GrantFiled: September 25, 2008Date of Patent: March 19, 2013Assignee: Landec CorporationInventors: David Taft, Stelios Tzannis, Wei-Guo Dai, Sandra Ottensmann, Steven Bitler, Qiang Zheng, Adam Bell
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Publication number: 20120142581Abstract: 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: ApplicationFiled: February 14, 2012Publication date: June 7, 2012Applicant: Landec CorporationInventors: DAVID TAFT, STELIOS TZANNIS, WEI-GUO DAI, SANDRA OTTENSMANN, STEVEN BITLER, QIANG ZHENG, ADAM BELL
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Publication number: 20120088659Abstract: 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: ApplicationFiled: June 4, 2010Publication date: April 12, 2012Applicant: Landec CorporationInventors: David Taft, Steven Bitler, Qiang Zheng, Natarajan Balanchander, Damian Hadjuk
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Publication number: 20120082709Abstract: 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: ApplicationFiled: June 11, 2010Publication date: April 5, 2012Applicant: Landec CorporationInventors: David D. Taft, Stephen P. Bitler, Qiang Zheng, Natarajan Balanchander, Sandra N. Ottensman
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Patent number: 8114883Abstract: Delivery of drugs in association with PLGA polymers which have crystallinity resulting from the presence of long chain alkyl groups in terminal units.Type: GrantFiled: October 10, 2008Date of Patent: February 14, 2012Assignee: Landec CorporationInventors: David Taft, Stelios Tzannis, Wei-Guo Dai, Sandra Ottensmann, Steven Bitler, Qiang Zheng, Adam Bell
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Patent number: 8092848Abstract: 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: GrantFiled: September 3, 2009Date of Patent: January 10, 2012Assignee: Landec CorporationInventor: Raymond Clarke
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Patent number: 7601374Abstract: 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: GrantFiled: November 20, 2001Date of Patent: October 13, 2009Assignee: Landec CorporationInventor: Raymond Clarke
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Publication number: 20090252777Abstract: Methods for making formulations of drugs and crystalline side chain polymers which formulations provide controlled and/or sustained release drug formulations.Type: ApplicationFiled: September 25, 2008Publication date: October 8, 2009Applicant: Landec CorporationInventors: David Taft, Stelios Tzannis, Wei-Guo Dai, Sandra Ottensmann, Steven Bitler, Qiang Zheng, Adam Bell
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Publication number: 20090209558Abstract: Delivery of drugs in association with PLGA polymers which have crystallinity resulting from the presence of long chain alkyl groups in terminal units.Type: ApplicationFiled: October 10, 2008Publication date: August 20, 2009Applicant: Landec CorporationInventors: David Taft, Stelios Tzannis, Wei-Guo Dai, Sandra Ottensmann, Steven Bitler, Qiang Zheng, Adam Bell
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Patent number: 7291389Abstract: 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: GrantFiled: February 12, 2004Date of Patent: November 6, 2007Assignee: Landec CorporationInventors: Steven P. Bitler, Edward E. Schmitt, Quiang Zheng
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Patent number: 7182951Abstract: 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: GrantFiled: January 29, 2003Date of Patent: February 27, 2007Assignee: Landec CorporationInventors: Natarajan Balachander, Julian E. Schafer, Ray F. Stewart, David D. Taft