Patents by Inventor Chel W. Lew
Chel W. Lew 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).
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Patent number: 6174538Abstract: Baits useful against diabroticine mature and immature beetles contain (a) an insecticide and (b) a feeding stimulant containing a cucurbitacin in a gelatin binder.Type: GrantFiled: February 8, 1994Date of Patent: January 16, 2001Assignee: Micro Flo CompanyInventors: Keith L. Branly, James M. Gaggero, Chel W. Lew, Cathy S. Lamb
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Patent number: 6056992Abstract: Edible microcapsules and a process for recovering them are disclosed. The microcapsules include a shell material that has a thermal gelation temperature within the range from about 90.degree. F. to about 160.degree. F. The encapsulated material is a food additive which is protected from degradation and loss during the processing at relatively high temperatures of food products. The invention is particularly useful for additives to liquid-based foods such as soups, stews, and sauces.Type: GrantFiled: June 15, 1993Date of Patent: May 2, 2000Assignee: Campbell Soup CompanyInventor: Chel W. Lew
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Patent number: 5690951Abstract: Baits useful against insects contain a homogeneous mixture of:(a) a binding agent comprising a polymer that is solid at 25.degree. C. and exhibits a melting point within the range from about 35.degree. C. to about 65.degree. C.;(b) an erosion rate modifier for said binder; and(c) 0.01-99 wt % of an insecticide; and(d) 0.01-99 wt % of a feeding stimulant for the target insect population.Type: GrantFiled: June 6, 1995Date of Patent: November 25, 1997Assignee: Micro Flo CompanyInventors: Chel W. Lew, Kelly Scott Johns
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Patent number: 5653973Abstract: Baits useful for controlling lepidoptera populations is made with (a) a diet component for lepidoptera; (b) a toxicant; (c) a chemiluminescent, visual attractant and (d) an encapsulating agent that will allow moisture to permeate and form an external condensate of said diet and said toxicant. The diet, toxicant, and chemiluminescent visual attractant can be used in the same bait particle in a homogeneous or layered structure. Alternatively, the diet/toxicant may be used with a first encapsulating agent in a first bait particle with the chemiluminescent, visual attractant encapsulated in a second bait particle and distributed among the diet/toxicant bait particles.Type: GrantFiled: August 16, 1996Date of Patent: August 5, 1997Assignee: Micro Flo CompanyInventors: Chel W. Lew, Keith Branly, Jesse Gaytan, Osborn Jones Turner
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Patent number: 5643351Abstract: Molten, water soluble polymer is used as a binder for agriculturally effective active ingredients in a water free encapsulation process. For finely divided solid active ingredients, a solvent for the binder can be used to increase the amount of bound active ingredient. For water insoluble active ingredients, the binder provides a method for rendering the active ingredient dispersable in water.Type: GrantFiled: June 6, 1995Date of Patent: July 1, 1997Assignee: Micro Flo CorporationInventors: Chel W. Lew, Keith Branly, Jesse Gaytan
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Patent number: 5609880Abstract: Baits useful against diabroticine mature and immature beetles contain (a) an insecticide and (b) a feeding stimulant containing corn germ.Type: GrantFiled: June 6, 1995Date of Patent: March 11, 1997Assignee: Micro Flo CompanyInventors: Derrill Munson, Chel W. Lew, James M. Gaggero, Keith Branly
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Patent number: 5607708Abstract: An encapsulated flavoring material contains an edible, oil-insoluble, water-soluble outer shell surrounding an edible, water-insoluble inner core that is liquid at a temperature of about 45.degree. C. and a volatile, oil-soluble flavoring material dissolved or dispersed in the inner core. In preferred embodiments, the encapsulated flavoring material has a diameter of from about 250 to about 710 microns, the outer shell is made from starch, the inner core is made from hydrogenated vegetable oil and the volatile, oil-soluble flavoring material is diacetyl.Type: GrantFiled: January 24, 1995Date of Patent: March 4, 1997Assignee: Hunt-Wesson, Inc.Inventors: Mark S. Fraser, Kenneth C. Goodnight, Chel W. Lew
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Patent number: 5607684Abstract: Baits useful in the control of insect populations are made by a process that includes the steps of: (a) forming droplets of a homogeneous, substantially water-free mixture comprising: (i) 0.01-99 wt % of a feeding stimulant in the form of a finely divided particulate or liquid; (ii) 0.01-99 wt % of an insecticide; and (iii) a molten, polymeric binder composition that is solid at 25.degree. C. and exhibits a melting point within the range from about 35.degree. C. to about 65.degree. C.; and (b) making particulate baits from the droplets by cooling the droplets to a temperature below the melting point of the mixture. The absence of added water permits the use of active insecticidal ingredients that are generally temperature sensitive to the drying temperatures needed for commercial spray drying operations as well as those sensitive to the presence of water during extended storage and transport periods. The use of the present water-free process avoids hydrolysis of the active insecticide during those periods.Type: GrantFiled: June 5, 1995Date of Patent: March 4, 1997Assignee: Micro Flo CompanyInventors: Chel W. Lew, Kelly S. Johns
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Patent number: 5599583Abstract: Molten, water soluble polymer is used as a binder for agriculturally effective active ingredients in a water free encapsulation process. For finely divided solid active ingredients, a solvent for the binder can be used to increase the amount of bound active ingredient. For water insoluble active ingredients, the binder provides a method for rendering the active ingredient dispersable in water.Type: GrantFiled: May 27, 1994Date of Patent: February 4, 1997Assignee: Micro Flo CompanyInventors: Chel W. Lew, Keith Branly, Jesse Gaytan
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Patent number: 5599767Abstract: Agriculturally effective active ingredients are encapsulated in a "salt sensitive" polymeric binder. Normally, the binder is water soluble and would release the active ingredient when wetted. In the presence of a hardening salt to which the polymer is sensitive, the polymer becomes water insoluble for so long as it is in chemical contact with the hardening salt. This sensitivity is used to control the circumstances and timing of the release of the encapsulated active ingredient.Type: GrantFiled: May 27, 1994Date of Patent: February 4, 1997Assignee: Micro Flo CompanyInventors: Chel W. Lew, Keith Branly, Jesse H. Gaytan
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Patent number: 5571522Abstract: Baits useful against diabroticine mature and immature beetles contain (a) an insecticide and (b) a feeding stimulant containing corn germ.Type: GrantFiled: January 31, 1994Date of Patent: November 5, 1996Assignee: Micro Flo CompanyInventors: Derrill Munson, Chel W. Lew, James M. Gaggero, Keith Branly
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Patent number: 5484587Abstract: Baits for diabroticine beetles are microspherical particles containing a homogeneous mixture of a toxicant for diabroticine beetles and a feeding stimulant in a binder containing a gelatin and a gum. Preferred formulations include carbaryl and buffalo gourd root powder.Type: GrantFiled: October 31, 1991Date of Patent: January 16, 1996Assignee: Micro Flo CompanyInventors: Keith Branly, James M. Gaggero, Chel W. Lew, Cathy S. Lamb
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Patent number: 5466460Abstract: Microcapsules are prepared by encapsulating a core material with a capsule shell wall containing glutaraldehyde crosslinked gelatin and at least one water soluble plasticizer that reduces the permeability of the crosslinked gelatin. Optionally, the capsule shell wall also contains a feeding deterrent that dissuades accidental ingestion of the microcapsule. Upon exposing the microcapsules to water, the plasticizer is removed making the shell wall permeable whereby the encapsulated core material is released. Materials such as insecticides, herbicides, plant growth regulating agents, and fungicides may be encapsulated and released at a controlled location, time and rate.Type: GrantFiled: December 2, 1993Date of Patent: November 14, 1995Assignee: Micro Flo CompanyInventors: William A. McMahon, Chel W. Lew, Keith L. Branly
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Patent number: 5364634Abstract: A capsule and method for delivery for an active ingredient in the oral cavity that has a pH sensitive encapsulant shell and is associated with an adhesive. The pH sensitive shell dissolves at a pH in the oral cavity while the adhesive allows dissolution at the selected tissue.Type: GrantFiled: November 8, 1991Date of Patent: November 15, 1994Assignee: Southwest Research InstituteInventor: Chel W. Lew
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Patent number: 5292533Abstract: Microcapsules are prepared by encapsulating a core material with a capsule shell wall containing glutamldehyde crosslinked gelatin and at least one water soluble plasticizer that reduces the permeability of the Crosslinked gelatin. Optionally, the capsule shell wall also contains a feeding deterrent that dissuades accidental ingestion of the microcapsule. Upon exposing the microcapsules to water, the plasticizer is removed malting the shell wall permeable whereby the encapsulated core material is released. Materials such as insecticides, herbicides, plant growth regulating agents, and fungicides may be encapsulated and released at a controlled location, time and rate.Type: GrantFiled: March 27, 1992Date of Patent: March 8, 1994Assignee: Micro Flo Co.Inventors: William A. McMahon, Chel W. Lew, Keith L. Branly
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Patent number: 5271934Abstract: Microencapsulates containing antiperspirant salts, microencapsulates in conjunction with bioadhesives, and antiperspirant/deodorant compositions containing the microencapsulates of the invention.Type: GrantFiled: October 19, 1992Date of Patent: December 21, 1993Assignee: Revlon Consumer Products CorporationInventors: Marvin E. Goldberg, David M. Kellner, Chel W. Lew, Cathy S. Lamb
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Patent number: 5246636Abstract: A process for forming microcapsules wherein the core material in the form of substantially uniform particles is projected through at least one descending curtain of encapsulating wallforming material in the form of an atomized mist of droplets so as to coat said particles with said droplets to form a substantially uniform thickness of encapsulating material and apparatus for carrying out such process.Type: GrantFiled: May 7, 1991Date of Patent: September 21, 1993Assignee: Southwest Research InstituteInventors: Chel W. Lew, Jack D. Trevino
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Patent number: 5194262Abstract: Microencapsulates containing antiperspirant salts, microencapsulates in conjunction with bioadhesives, and antiperspirant/deodorant compositions containing the microencapsulates of the invention.Type: GrantFiled: August 6, 1991Date of Patent: March 16, 1993Assignee: Revlon Consumer Products CorporationInventors: Marvin E. Goldberg, David M. Kellner, Chel W. Lew, Cathy S. Lamb
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Patent number: 5181505Abstract: An apparatus (10) for dispensing a medicament such as an antibiotic in the upper aerodigestive tract of an intubated patient (22). The apparatus (10) is a generally ovoid body (12) comprised of a substrate which can be polymeric, natural or synthetic woven or spun fiber, a gel, or other substance capable of being impregnated with the medicament and then releasing the medicament when contacted by an aqueous solution, specifically, the saliva of patient (22).Body (12) is shaped with rounded tapered surfaces (30) and ends (26) for engaging the mucosa of the alveolar ridge (32) and palate (20) of patient (22) to stabilize the apparatus (10) in the oral cavity (24). A channel (38) is provided for passage of the tube (40) of an endotracheal tube (36) therethrough which cooperates with the surfaces (30) and ends (26) to stabilize both endotracheal tube (36) and body (12) in the oral cavity (24).Type: GrantFiled: June 28, 1991Date of Patent: January 26, 1993Inventors: Chel W. Lew, Thomas B. Aufdemorte, Howard S. McGuff, Gerald L. Alderson
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Patent number: 5167962Abstract: A filament system for delivery of a medicament in the intestine comprised of a material having the medicament contained therein which is coiled for ease in ingestion and to prevent uncoiling until the filament reaches the intestine. Once the coiled filament reaches the intestine and uncoils, the medicament is released therefrom. The filament is preferably comprised of a material which is water insoluble, semipermeable, enteric, or bioerodible to facilitate release of the medicament, and is provided with or comprised of a bioadhesive for retarding the passage of the filament through the intestine once uncoiled, with the result that therapeutically effective dosage levels are substained for relatively long periods of time.Type: GrantFiled: August 8, 1991Date of Patent: December 1, 1992Assignee: Southwest Research InstituteInventors: Chel W. Lew, Jack D. Trevino