Biodegradable Feature Patents (Class 383/1)
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Publication number: 20030066779Abstract: The present invention relates to a bag packaging system composed of a bag sealable to contain a liquid, in which the bag is composed of a continuous outer water soluble film and an inner continuous protective film layer that allows storage therein of a liquid that would chemically or physically react with the water soluble film but is prevented from doing so by the presence of the continuous protective film layer on the inner portion of the bag.Type: ApplicationFiled: November 5, 2002Publication date: April 10, 2003Inventors: Armand J. Desmarais, Henry E. Knoop, Lawrence C. Dull, Jean A. Raymond
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Patent number: 6524667Abstract: A biodegradable, compostable, liquid-impermeable lined paper bag for containing wet wastes. All adhesives used in the process are cold glues applied without using heat, through an extrusion and/or metering application means. Cellulose film is used for the paper liner and dot matrix configuration of adhesive is applied between the cellulose and paper layers for lamination. The matrix-defined size of spacings between the points of application of adhesive on the cellulose film are preselected to permit passage of water vapour and oxygen through the cellulose-laminated paper and reduce stress points on the cellulose film. A second cold glue is applied to the bag bottom section by a matrix of extrusion adhesive guns via a programmable controller to predetermined areas of the bag bottom section.Type: GrantFiled: May 17, 2000Date of Patent: February 25, 2003Assignee: Prescott Paper Products (USA), Inc.Inventor: George P. Colgan
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Publication number: 20030021498Abstract: A laminated film includes an outer-layer-film, a water-soluble film, and an intermediate layer interposed between the outer-layer-film and the water-soluble film. The intermediate layer contains high-pressure polyethylene oxidized to a prescribed degree on a surface thereof contiguous to the water-soluble film. The outer-layer-film and the intermediate layer adhere fast to each other. The intermediate layer and the water-soluble film directly contact each other and adhere so weakly to each other as to be peelable.Type: ApplicationFiled: September 5, 2002Publication date: January 30, 2003Applicant: Kyodo Shiko Co., Ltd.Inventor: Yoshiaki Tokita
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Publication number: 20020175094Abstract: An expandable plastic bag which is attached to a side of a tissue box for receiving used tissues. The bag has an elasticized opening for keeping the bag closed between uses. An optional reclosable opening along the bottom end of the bag allows the user to periodically empty the bag and dispose of the used tissues contained therein.Type: ApplicationFiled: May 23, 2001Publication date: November 28, 2002Inventors: Evangeline Eunice Campbell, Ricci Lamar Campbell
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Patent number: 6484879Abstract: The present invention relates to a bag packaging system composed of a bag sealable to contain a liquid, in which the bag is composed of a continuous outer water soluble film and an inner continuous protective film layer that allows storage therein of a liquid that would chemically or physically react with the water soluble film but is prevented from doing so by the presence of the continuous protective film layer on the inner portion of the bag.Type: GrantFiled: April 7, 1997Date of Patent: November 26, 2002Assignees: Syngenta Crop Protection, Inc., MonoSol, LLCInventors: Armand J. Desmarais, Henry E. Knoop, Lawrence C. Dull, Jean A. Raymond
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Patent number: 6471401Abstract: A laminated film includes an outer-layer-film, a water-soluble film, and an intermediate layer interposed between the outer-layer-film and the water-soluble film. The intermediate layer contains high-pressure polyethylene oxidized to a prescribed degree on a surface thereof contiguous to the water-soluble film. The outer-layer-film and the intermediate layer adhere fast to each other. The intermediate layer and the water-soluble film directly contact each other and adhere so weakly to each other as to be peelable.Type: GrantFiled: September 1, 2000Date of Patent: October 29, 2002Assignee: Kyodo Shiko Co., Ltd.Inventor: Yoshiaki Tokita
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Patent number: 6440508Abstract: A laminated film includes an outer-layer-film, a water-soluble film, and an intermediate layer interposed between the outer-layer-film and the water-soluble film. The intermediate layer contains high-pressure polyethylene oxidized to a prescribed degree on a surface thereof contiguous to the water-soluble film. The outer-layer-film and the intermediate layer adhere fast to each other. The intermediate layer and the water-soluble film directly contact each other and adhere so weakly to each other as to be peelable.Type: GrantFiled: September 1, 2000Date of Patent: August 27, 2002Assignee: Kyodo Shiko Co.Inventors: Yoshiaki Tokita, Takahiro Takagi
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Publication number: 20020040216Abstract: A cell storage maintenance and monitoring system includes a blood product storage container, such as a flexible bag, and a microporous membrane which may be attached to an inner wall of the blood storage container to form a contained space between the inner wall and the membrane. The membrane includes a plurality of pores, preferably filled with an erodible substance responsive to a characteristic of the blood product. When the pH value drops to a predetermined level, the substance begins to erode, causing the pores to enlarge, and allowing a portion of the blood product to pass through the pores into the contained space, where it can be visibly detected. The contained space may contain a chemical indicator or buffers and nutrients, which are released into the blood product when the pores begin to open. In another embodiment, the microporous membrane may be in the form of a pod or capsule which may be attached to the wall or allowed to free-float within the contents of the storage container.Type: ApplicationFiled: October 4, 2001Publication date: April 4, 2002Applicant: Gambro, Inc.Inventors: Larry Joe Dumont, Frank Corbin
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Patent number: 6350461Abstract: Controlled release compositions of matter are disclosed comprising complexes for treating a population of one or more aquatic organisms in a column of water. The complexes comprise at least one system wherein the system comprises at least one bioactive agent as a component selected for treating a population of aquatic organisms, at least one carrier component, and at least one coating component for regulating the controlled release rate and release profile of the bioactive agent in water or at least one bioactive agent and one joint-function component that can serve as both a carrier and coating to regulate the controlled release rate and release profile of the bioactive agent in water, with or without optional binder components and/or additional formulation materials. The components are selected to sink or float so that the complexes will permeate and/or remain in any planar or volumetric segment of a water column for a period of time that is sufficient to effectively treat a population of aquatic organisms.Type: GrantFiled: December 10, 1999Date of Patent: February 26, 2002Assignee: Lee County Mosquito Control DistrictInventor: Richard Levy
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Publication number: 20010054567Abstract: The present invention relates to a bag packaging system composed of a bag sealable to contain a liquid, in which the bag is composed of a continuous outer water soluble film and an inner continuous protective film layer that allows storage therein of a liquid that would chemically or physically react with the water soluble film but is prevented from doing so by the presence of the continuous protective film layer on the inner portion of the bag.Type: ApplicationFiled: April 7, 1997Publication date: December 27, 2001Inventors: ARMAND J. DESMARAIS, HENRY E. KNOOP, LAWRENCE C. DULL, JEAN A. RAYMOND
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Patent number: 6315767Abstract: A cell storage maintenance and monitoring system includes a blood product storage container, such as a flexible bag, and a microporous membrane which may be attached to an inner wall of the blood storage container to form a contained space between the inner wall and the membrane. The membrane includes a plurality of pores, preferably filled with an erodible substance responsive to a characteristic of the blood product, such as pH. When the pH value drops to a predetermined level, the substance begins to erode, causing the pores to enlarge, and allowing a portion of the blood product to pass through the pores into the contained space, where it can be visibly detected. The contained space may contain a chemical indicator or buffers and nutrients, which are released into the blood product when the pores begin to open. In another embodiment, the microporous membrane may be in the form of a pod or capsule which may be attached to the wall or allowed to free-float within the contents of the storage container.Type: GrantFiled: August 19, 1998Date of Patent: November 13, 2001Assignee: Gambro, Inc.Inventors: Larry Joe Dumont, Frank Corbin, III
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Patent number: 6244746Abstract: A laminated film includes an outer-layer-film, a water-soluble film, and an intermediate layer interposed between the outer-layer-film and the water-soluble film. The intermediate layer contains high-pressure polyethylene oxidized to a prescribed degree on a surface thereof contiguous to the water-soluble film. The outer-layer-film and the intermediate layer adhere fast to each other. The intermediate layer and the water-soluble film directly contact each other and adhere so weakly to each other as to be peelable.Type: GrantFiled: November 13, 1997Date of Patent: June 12, 2001Assignee: Kyodo Shiko Co.Inventors: Yoshiaki Tokita, Takahiro Takagi
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Patent number: 6155714Abstract: A flexible, plastic packaging apparatus having a plurality of compartments for containing product therein and a center section interconnecting the plurality of compartments and defining a handle therein whereby the packaging apparatus can contain product separately in each of the compartments and the handle can be used to transport the package.Type: GrantFiled: November 16, 1998Date of Patent: December 5, 2000Assignee: Rhone PoulencInventor: John F. Gee
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Patent number: 6102457Abstract: A system and method for the individual collection and disposal of pet waste includes a flushable bag for contacting and receiving the pet waste and a protective bag for receiving and protecting the flushable bag during transport. The pet waste is collected and placed in the flushable bag, the flushable bag is placed inside the protective bag, and the bags containing the pet waste are transported to a toilet into which the flushable bag is deposited and flushed. The flushable bag can be fabricated from paper having a temporary wet strength additive that imparts both the desirable wet strength and decayability when soaking in water. The invention also includes a compostable bag for disposing of compostable materials along with the bag itself in a composting system or composting toilet. The invention expedites the disposal of pet waste or compostable materials and decreases the burden on landfills to accommodate such materials.Type: GrantFiled: March 26, 1999Date of Patent: August 15, 2000Inventor: Barbara Ruth Smith
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Patent number: 5827586Abstract: A packaging container for chemicals such as pesticides and the like and a laminated film for forming said container, wherein the inner layer of the laminated film is constituted of an inner bag made of a water-soluble polymer film and the outer layer of the laminated film is constituted of an outer bag made of a water-insoluble film, and at least in the seal part of the container, films constituting inner layer are bonded to each other and additionally the film constituting inner layer and the film constituting outer layer are bonded to each other, and the film constituting inner layer and the film constituting outer layer are releasable from each other.Type: GrantFiled: December 13, 1996Date of Patent: October 27, 1998Assignee: Ciba-Geigy Japan LimitedInventors: Ryo Yamashita, Kenichi Kitagaki, Takahiro Matsubara, Mikio Takenaka
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Patent number: 5811161Abstract: The present invention relates to a package of paper or paperboard having a thin extruded polyethylene coating, which is degradable in a compost. Further, the invention also relates to a method of disposing of such a package by placing the package, with or without compostable contents, in a compost, and use of such a package for storage and transport of compostable waste, such as domestic waste.Type: GrantFiled: July 10, 1996Date of Patent: September 22, 1998Assignee: Korsnas ABInventors: H.ang.kan Joves, Johanna Lofroth Nickel, Bengt Nordin, Roland Nordin
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Patent number: 5691015Abstract: A composite film bag 1 for packaging comprises a composite film of a water-insoluble film 2 and a water-soluble polyvinyl alcohol film 3 which are adhered to one another to such an extent that the former film 2 can easily be peeled off from the latter film 3 and which are formed into a bag so that the water-insoluble film 2 serves as an outer layer of the bag and the water-soluble polyvinyl alcohol film 3 serves as an internal layer thereof. A powdery or liquid agricultural chemical agent 6 is packed in the composite film bag 1 and the opening of the bag is sealed. Upon practical use, the outer water-insoluble film 2 is peeled off to expose the internal film 3 and the internal film 3 as such, while containing the agricultural chemical agent 6, is introduced into water. Thus, the internal film is dissolved in water and in turn the content 6 thereof is released and accordingly dissolved in water. The composite film bag 1 is not broken at all even when it is exposed to a low temperature condition.Type: GrantFiled: December 28, 1995Date of Patent: November 25, 1997Assignee: Aicello Chemical Co., Ltd.Inventors: Yoshinori Tsukamoto, Michio Shimizu
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Patent number: 5679421Abstract: Biodegradable bags can be formed out of two-ply sheet materials that include an outer ply of kraft paper and an inner ply of biodegradable thermoplastic material. The two-ply sheets are formed and connected together with the use of biodegradable adhesives that do not constitute barriers to biodegradation of the bag material in a composting environment. The sheets are preferably laminated and joined together, using heat-sealing procedures. Preferred biodegradable materials are polyvinyl alcohol, hydroxyethylcellulose polymer, polyethylene glycol polymer, polycaprolactone, polylactic acid, hydroxybutyrate polymer, hydroxyvalerate polymer, and a copolymer of hydroxybutyrate and hydroxyvalerate.Type: GrantFiled: October 30, 1995Date of Patent: October 21, 1997Inventor: William F. Brinton, Jr.
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Patent number: 5524423Abstract: A kit and method for removing fallen leaves and other yard waste, composting the leaves, and applying a fertilizer and/or dethatching agent to the ground is disclosed. The kit generally comprises fabric net impregnated with a fertilizer and/or dethatching material, a bag, impregnated with a composting promoting material, which receives the rolled net, and a plurality of special spikes, adapted to hold the net to the ground.Type: GrantFiled: July 12, 1994Date of Patent: June 11, 1996Inventor: Reginald J. Haley
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Patent number: 5516562Abstract: A container suitable for hazardous liquids such as agrochemical concentrates comprises an outer shell (I) made from a compressed fiber material, typically recycled biodegradable material, having an associated barrier (3) comprising a water soluble or water dispersible polymeric material. The container is stackable. A method of making the container, and of testing the coating for leaks, is also described.Type: GrantFiled: September 22, 1993Date of Patent: May 14, 1996Assignee: Rhone-Poulenc Agriculture, Ltd.Inventors: David B. Edwards, Alan J. Aldred
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Patent number: 5492410Abstract: An inner container and an outer container folded together to form a container having opposite gusseted side walls, planar front and back walls and a bottom wall comprising portions of the inner and outer containers not adhesively secured together and having a bottom surface comprising portions of the outer container and an outer member adhesively secured to the portions of the outer container forming the bottom surface.Type: GrantFiled: July 6, 1994Date of Patent: February 20, 1996Assignee: Graphic Packaging CorporationInventor: David D. Cocozza
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Patent number: 5480394Abstract: According to the present invention, there is provided a highly biodegradable flexible member adapted for medical use which is capable of undergoing degradation in a relatively short period of time in natural environment by burying in soil or abandoning in sea after its sterilization so that no environmental pollution would be caused by its disposal, and which additionally has excellent workability, cost performance, compatibility to ecosystem, as well as biocompatibility. At least a portion of the flexible medical member is fabricated from a material containing a resin composition comprising a polyhydroxyalkanoate, a copolymer thereof, or a mixture thereof as its main component, and 0.01 to 60% by weight of a lipid compound.Type: GrantFiled: May 27, 1993Date of Patent: January 2, 1996Assignee: Terumo Kabushiki KaishaInventor: Kenji Ishikawa
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Patent number: 5409315Abstract: A soluble measuring device or vessel for measuring materials whereby the measuring device or vessel is disposed of by dissolving same in the solution prepared for the material being measured. This invention discloses articles, methods and systems, wherein hazardous or other bulk liquid or dry materials can be measured, transferred or handled wherein the articles which come in contact with the materials are soluble articles or devices that can be disposed of by dissolving those contaminated articles or devices in a solution, which preferably is the solution being prepared for immediate use of the material, or otherwise can be a solution which can be collected and disposed of in an environmentally safe and acceptable manner. The soluble articles or devices for use in the methods and systems in this invention comprise measuring vessels, tools, tool covers, work surface protective sheets, liners for funnels and other material handling tools, clothing and body covers, clean-up pads and tissues, and the like.Type: GrantFiled: February 1, 1994Date of Patent: April 25, 1995Inventor: Philip S. Evans
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Patent number: 5403096Abstract: An environmentally safe, multi-wall disposable bag for a granulated pesticide which is made of: a) a first outer bag composed of paper having a closed end, an open end, an inner, uncoated surface and an outer surface, and b) a second bag composed of a water soluble material having a closed end, an open end, an inner surface and an outer surface which is positioned within outer bag a) in a manner such that in the open position, its opening extends beyond that of outer bag a).Type: GrantFiled: September 15, 1993Date of Patent: April 4, 1995Assignee: Miles Inc.Inventor: Gary Aagesen
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Patent number: 5387147Abstract: A balloon is formed from a water-soluble film which mainly comprises a polyvinyl alcohol. Coloring agents as food additives are used for pigmenting the balloon. The balloon per se is soluble in water upon coming in contact with water and accordingly, it never becomes a cause of environmental pollution. The coloring agents used are those for use in foods and thus they do not become a cause of environmental pollution.Type: GrantFiled: May 19, 1993Date of Patent: February 7, 1995Assignees: Mitsui Co., Ltd., Mitsui Plastics, Inc., Aicello Chemical Co., Ltd.Inventors: Masatake Ohshima, Yasuhiro Ohsone, Masanori Satoh
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Patent number: 5199792Abstract: A sandwich pouch is formed from a unitary blank of Kraft paper or other easily biodegradable, flexible sheet material. The blank is of generally rectangular form and includes a plurality of generally rectangular panels, joined side by side and foldably secured together by generally transversely extending fold lines. The ends of a pair of middle panels are each provided with a generally rectangular end seal flap. The blank is also provided with a pair of longitudinally extending tear lines which permit the pouch formed from the blank to be torn open at either or both ends to gain access to its contents. The pouch is opened by bending back an upper front closure panel for insertion of a food product such as a hamburger.Type: GrantFiled: October 18, 1991Date of Patent: April 6, 1993Assignee: International Paper CompanyInventor: Paul D. Roosa
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Patent number: 5178469Abstract: A collapsible biodegradable container, or bag, for containing liquid-containing solid materials, e.g., compostible materials, such as food waste, yard waste, etc., from restaurants, homes, etc. A single sheet of two-ply material is used to form both the bag side walls, as well as the bag bottom wall. Kraft paper is used to form the bag outer surface, whereas a cellulose film, or cellophane, is used to form the bag inner surface. A slab of moisture-absorbent material is also placed on the bag bottom wall, to intercept liquid draining from the contained material toward the bag bottom wall. The outer paper ply gives the bag its structural strength, so that it can be self-sustaining in an upright condition. The inner cellulose layer, or cellophane ply, provides a liquid barrier to protect the outer paper ply from the destructive effects of liquid. The bag, is also permeable to air and water vapor, while retaining liquids.Type: GrantFiled: November 1, 1991Date of Patent: January 12, 1993Assignee: Woods End Research Laboratory, Inc.Inventor: Jonathan W. Q. Collinson
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Patent number: 5143133Abstract: A covering for furniture during shipment thereof is comprised of a flexible sheet material constructed of a multiplicity of plys utilizing easily recyclable material and is folded into a configuration having free ends stitched shut whereby the covering may be placed over a furniture item for protection during shipment thereof.Type: GrantFiled: January 21, 1992Date of Patent: September 1, 1992Assignee: U.S. Packaging, Inc.Inventor: Mark C. Speckman
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Patent number: 5111933Abstract: The present invention comprises a method of providing a polymeric based compost bag formed with a relatively high percentage of thermal oxidative degradation catalyst, such as a transition metal salt, and, preferably, a process stabilizer. The stabilizer permits the use of high levels of the thermal oxidative degradation catalyst without the risk of premature accelerated degradation during manufacturing and storing. According to the present invention, the compost bags are packaged in containers which are impervious to gases and vapors thus depriving the pro-oxidant of the oxygen necessary to degrade the polymer. The package may also provide a barrier to the loss of stabilizer during storage. Also disclosed is a kit for the disposal of waste.Type: GrantFiled: April 16, 1991Date of Patent: May 12, 1992Assignee: Mobil Oil CorporationInventors: Daniel J. Di Biasi, Frederick C. Schwab
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Patent number: 5108807Abstract: The invention relates to multilayer degradable thermoplastic articles. In one embodiment the novel multilayer thermoplastic article comprises a first outer layer, a core layer and second outer layer, wherein the first outer layer and second outer layer are degradable by photo, thermal or chemical means and contain an effective amount of a prodegradant and the core layer is a water-soluble and/or biodegradable core layer, preferably both water-soluble and biodegradable. Bags formed from the multilayer thermoplastic article are useful for use in the composting of organic material.Type: GrantFiled: March 14, 1990Date of Patent: April 28, 1992Assignee: First Brands CorporationInventor: Edward B. Tucker
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Patent number: 5107989Abstract: A container for packaging electronic components which are susceptible to damage from electrostatic discharge or fields comprises a container made of paperboard or paper having an electrically conductive coating of electrostatic shielding material on the exterior surface thereof, and a coating of inorganic non-carbonaceous electrostatic dissipative material on the interior surface thereof. The electrically conductive coating preferably has an electrical surface resistivity of less than about 10.sup.5 ohms/square, and the inorganic, non-carbonaceous, electrostatic dissipative coating has an electrical surface resistivity of greater than about 10.sup.5 ohms/square. The electrostatic shielding material is preferably a carbonaceous material, and the non-carbonaceous, electrostatic dissipative material preferably comprises particles of amorphous silica or silica-containing material coated with antimony-doped tin oxide.Type: GrantFiled: April 12, 1991Date of Patent: April 28, 1992Assignee: Conductive Containers, Inc.Inventor: Raymond P. Becker
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Patent number: 5031277Abstract: An improved trash and leaf bagging apparatus is constructed of a rigid frame having an opening that is completely surrounded with a supply of netting material that forms a netting bag. The rigid frame may be connected to a handle, to facilitate mobility; the rigid frame may also be connected to a collapsible tunnel assembly that forms a converging tunnel toward the frame opening. Trash, leaves or other refuse is projected through the rigid frame and into the netting bag by means of an air blowing device. When the bag is filled to the desired capacity, the netting material is cut and tied at the open end to form a completely enclosed bag of refuse. A new netting bag may be formed from the supply of netting surrounding the rigid frame and the process repeated.Type: GrantFiled: November 2, 1989Date of Patent: July 16, 1991Inventor: Darby T. Coker
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Patent number: 5018876Abstract: A trash bag that has separable compartments that are connected by plastic zippers.The object of the invention is to enable an individual to separate trash in one receptacle. One separable half is to be made of bio-degradable plastic for perishable trash and the other separable half made of recyclable plastic for recyclable trash.Type: GrantFiled: January 2, 1990Date of Patent: May 28, 1991Inventor: Robert M. Mennella
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Patent number: 5009647Abstract: A wc disposable ostomy bag has a wall formed from an inner layer of polyethylene and an outer layer of polyvinyl alcohol. Two flexible layers of aluminum are located between the inner and outer layers to reduce odor transmission through the wall. The material of the walls may be formed by vapor depositing the aluminum layers on respective faces of the inner and outer layers and then laminating the inner and outer layers together with the aluminum layers facing one another. Alternatively, both aluminum layers may be deposited on the same one of the inner or outer layers with a thin non-metallic layer between them to prevent the aluminum layers having common grain boundaries.Type: GrantFiled: February 6, 1990Date of Patent: April 23, 1991Assignee: Smiths Industries Public Limited CompanyInventors: David E. Cross, Kenneth J. Brooks, Neil A. Whiteside
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Patent number: 4992220Abstract: A mixture of boiling water and a gelling agent, such as the polysaccharide agar, are mixed and poured into a mold and allowed to cool and gel. The gelled mixture is then removed from the mold and frozen, after which it is placed in a freeze drier where it is completely sublimated to remove therefrom all moisture. The resultant freeze dried material is extremely light in weight, is biodegradable, and exhibits favorable fire retardant properties.Type: GrantFiled: June 23, 1989Date of Patent: February 12, 1991Inventors: Michael A. Neri, Joseph R. DeGeorge, William J. Every
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Patent number: 4974966Abstract: A carrier bag is described, particularly of biodegradable material, obtained by means of successive folding operations of an integral flat blank on which a series of folding lines has been provided (FIG. 9).Type: GrantFiled: September 22, 1989Date of Patent: December 4, 1990Inventor: Giorgio Fabbi
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Patent number: 4830187Abstract: Flexible, soft objects such as ostomy pouches, wound dressings, bandages, diapers, etc. can be flushed down a conventional toilet by covering the article with a sheet of material which rapidly becomes slimy or exudes a slimy material on contact with the water in a toilet bowl or by adding such materials directly to the bowl.Type: GrantFiled: February 26, 1988Date of Patent: May 16, 1989Assignee: E. R. Squibb & Sons, Inc.Inventors: Denis E. Keyes, Marvin S. Aronoff
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Patent number: 4451175Abstract: Soft ground is improved by a sand drain method wherein a casing pipe is inserted in the soft ground followed by insertion of a cylindrical bag composed of a water-permeable material into the casing pipe; sand is filled in the cylindrical bag and then only the casing pipe is drawn out from the soft ground whereby a sand drain is constructed in the soft ground; and then, a load is imposed on the sand drain-constructed region to remove water through the sand drain and consolidate the soft ground. The diameter of at least a part of the cylindrical bag is capable of being increased when the consolidation load is imposed on the sand drain-constructed region.Type: GrantFiled: August 25, 1982Date of Patent: May 29, 1984Assignees: Teijin Limited, Penta-Ocean Construction Co., Ltd.Inventors: Hiromichi Yamashita, Yoshiharu Watari, Hideaki Mutsuro, Kenji Takagi
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Patent number: 4410441Abstract: A fabric treatment product is in the form of a bag having at least two compartments containing particulate fabric treatment compositions. The bag has a first outer wall and an intermediate wall of water-insoluble but water-permeable material such as paper or nonwoven fabric, and a second outer wall of water-impermeable water-insoluble plastics sheet. In the washing machine the wash water first enters the compartment bounded by the first outer wall, which is water-permeable, and dissolves or disperses out its contents, for example, a detergent composition. The water subsequently penetrates the intermediate wall to enter the second compartment and dissolve or disperse out its contents, for example, a fabric conditioner.Type: GrantFiled: April 26, 1982Date of Patent: October 18, 1983Assignee: Lever Brothers CompanyInventors: James F. Davies, John B. Tune