And Spray Freeze Or Immersion Patents (Class 34/288)
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Patent number: 11105555Abstract: The present invention aims to provide a method and an apparatus for producing a lyophilized body, each of which can achieve energy saving, low cost, and a reduction in processing time and can provide a lyophilized body less damaged by a freezing process and a drying process. The present invention relates to a method for lyophilizing a substance using an electromagnetic wave, and the lyophilization method includes freezing the substance under irradiation of at least an electromagnetic wave and reduced-pressure drying the frozen substance under irradiation of at least an electromagnetic wave.Type: GrantFiled: April 2, 2018Date of Patent: August 31, 2021Assignee: NITTO DENKO CORPORATIONInventors: Chie Matsumoto, Takao Yoshikawa, Takuya Shishido, Yuji Toyota, Sachiko Sakamoto, Yoshimitsu Shimomura, Mitsuhiko Hori
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Patent number: 10921058Abstract: A convection current vacuum freeze drying method and a computer software program for manufacturing a product are disclosed which include: selecting specific freeze drying settings from a Database for a specific product; loading the specific freeze drying settings into a controller for fully controlling of the convection current freeze drying process; performing the convection current freeze drying process using an ice condenser unit equipped with a plurality of elongate heat exchange tubes having radially arranged fins; determining whether the convection current freeze drying process is operated in accordance to the specific freeze drying settings using a plurality of sensors and the controller, if the specific freeze drying settings are not corrected, then readjusting the specific freeze drying settings using the controller, and if the specific freeze drying settings are correct then packaging product.Type: GrantFiled: January 27, 2019Date of Patent: February 16, 2021Assignee: VINAMIT USA LLCInventor: Vien Lam Nguyen
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Patent number: 8444991Abstract: The disclosure provides a method of preparing an immunologically-active adjuvant-bound freeze dried vaccine composition. A specific embodiment provides a stable vaccine composition comprising an aluminum-salt adjuvant, a recombinant Clostridium botulinum neurotoxin protein and a glass-forming agent. These vaccine compositions are useful in the treatment of humans and other animals at risk of infection from Clostridium botulinum neurotoxin.Type: GrantFiled: March 18, 2008Date of Patent: May 21, 2013Assignee: The Regents of the University of Colorado, A Body CorporateInventors: Theodore W. Randolph, Amber Clausi, John F. Carpenter, Daniel K. Schwartz
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Patent number: 8341854Abstract: A vacuum freeze-drying apparatus capable of rapid drying is provided. A cold trap for drying, which is arranged inside a drying chamber, is set to a low temperature of ?70 degrees Celsius or below, and heat is supplied to frozen particles on a conveyor belt to a degree such that the frozen particles do not melt. The amount of the liquid component evaporating from the frozen particles increases, and the amount of the liquid component entering the frozen particles decreases so that the time for drying the frozen particles is shortened.Type: GrantFiled: December 10, 2009Date of Patent: January 1, 2013Assignee: Ulvac, Inc.Inventors: Seiji Ogata, Kyuzo Nakamura, Katsuhiko Itou, Takashi Hanamoto, Masaki Itou
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Patent number: 8322046Abstract: A method of manufacturing heat-sensitive pharmaceutical powder is disclosed. The original pharmaceutical substances are dissolved in a solution or suspended in a suspension, which is sprayed through an atomizing nozzle and frozen in a cold gas phase or liquid nitrogen atomized directly in the spray-freeze chamber or gas jacket at the same time (for cooling purposes). The particles are freeze-dried at roughly atmospheric pressure in a down-stream fluid flow with exit filter thereby to remove moisture entrapped on or inside the frozen particles. The system has applicability for forming other powders.Type: GrantFiled: March 18, 2008Date of Patent: December 4, 2012Inventors: Zhaolin Wang, Warren H. Finlay
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Patent number: 7086177Abstract: A system for reclaiming effluent from a freeze drying process has at least one condenser apparatus used during a freeze-drying cycle to collect effluent from material being freeze-dried, and a recovery reservoir positioned for collecting material from the condenser apparatus. The system is characterized in that ice crystals formed from the effluent are removed from the condenser after the freeze drying cycle into recovery reservoir to be re-used. Product systems include both freeze-dried material and the effluent collected during freeze drying.Type: GrantFiled: August 19, 2005Date of Patent: August 8, 2006Inventor: Edward K. Alstat
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Patent number: 7073349Abstract: A method and apparatus for producing particles, the apparatus includes a solution source that supplies a solution, and a fluid source that supplies a fluid. The solution includes a solvent and a solute. A mixer receives the solution and the fluid from the sources, and mixes the solution and the fluid together to form a mixture. The mixture is supplied from the mixer to an expansion assembly at first pressure. The expansion assembly sprays and expands the mixture substantially simultaneously to form frozen droplets, and preferably to form a low-density powder of frozen droplets. A freeze-dry apparatus sublimes the solvent from the particles. A high mass-transfer rate and a uniform open-structure of the powder bed enhances the freeze-drying process. Solid particles having a controlled size distribution are obtained. The particles preferably have a hollow or porous morphology suitable for differing drug delivery applications to include aerosol formulations.Type: GrantFiled: March 11, 2005Date of Patent: July 11, 2006Assignee: Ferro Pfanstiehl Laboratories, Inc.Inventors: Boris Y. Shekunov, Pratibhash Chattopadhyay, Jeffrey S. Seitzinger
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Patent number: 6935049Abstract: A system for reclaiming effluent from a freeze drying process has at least one condenser apparatus used during a freeze-drying cycle to collect effluent from material being freeze-dried, and a recovery reservoir positioned for collecting material from the condenser apparatus. The system is characterized in that ice crystals formed from the effluent are removed from the condenser after the freeze drying cycle into recovery reservoir to be re-used. Product systems include both freeze-dried material and the effluent collected during freeze drying.Type: GrantFiled: December 24, 2003Date of Patent: August 30, 2005Inventor: Edward K. Alstat
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Patent number: 6931888Abstract: A method and apparatus for producing particles, the apparatus includes a solution source that supplies a solution, and a fluid source that supplies a fluid. The solution includes a solvent and a solute. A mixer receives the solution and the fluid from the sources, and mixes the solution and the fluid together to form a mixture. The mixture is supplied from the mixer to an expansion assembly at first pressure. The expansion assembly sprays and expands the mixture substantially simultaneously to form frozen droplets, and preferably to form a low-density powder of frozen droplets. A freeze-dry apparatus sublimes the solvent from the particles. A high mass-transfer rate and a uniform open-structure of the powder bed enhances the freeze-drying process. Solid particles having a controlled size distribution are obtained. The particles preferably have a hollow or porous morphology suitable for differing drug delivery applications to include aerosol formulations.Type: GrantFiled: May 8, 2003Date of Patent: August 23, 2005Assignee: Ferro CorporationInventors: Boris Y. Shekunov, Pratibhash Chattopadhyay, Jeffrey S. Seitzinger
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Patent number: 6745490Abstract: This invention is concerned with a distributive ejection apparatus for liquid material in a freeze-drying apparatus for foodstuffs, medicaments, etc., wherein the liquid material adjusted from the starting material for foodstuffs, medicaments, etc. is caused to freeze onto the inner wall surface of the upright cylindrical tube, and the distributive ejection of the liquid material onto the tube at the time of its freeze-drying by sublimation of the moisture content in the material under the vacuum condition may be done in the state of supplying the liquid material over the entire surface of the inner wall surface of the tube with a substantially uniform thickness.Type: GrantFiled: January 4, 2002Date of Patent: June 8, 2004Assignee: Kyowa Vacuum Engineering Co., Ltd.Inventors: Hiromichi Akimoto, Ryoji Sunama
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Patent number: 6668844Abstract: Workpieces requiring low levels of contamination, such as semiconductor wafers, are loaded into a rotor within a process chamber. The process chamber has a horizontal drain opening in its cylindrical wall. The chamber is closed via a door. A process or rinsing liquid is introduced into the chamber. The liquid rises to a level so that the workpieces are immersed in the liquid. The chamber slowly pivots or rotates to move the drain opening down to the level of the liquid. The liquid drains out through the drain opening. The drain opening is kept near the surface of the liquid to drain off liquid at a uniform rate. An organic solvent vapor is introduced above the liquid to help prevent droplets of liquid from remaining on the workpieces as the liquid drains off. The rotor spins the workpieces to help to remove any remaining droplets by centrifugal force.Type: GrantFiled: July 16, 2001Date of Patent: December 30, 2003Assignee: Semitool, Inc.Inventors: Eric Lund, Joe Lanfrankie, Gil Lund, Dana Scranton, Eric Bergman
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Patent number: 6627597Abstract: A process for producing a starting material in a granular form and in a nanoporous anhydrous state, a process for improving the water-solubility and controlled release characteristics of a detergent material, and a detergent composition are disclosed. In one aspect, a process for producing a starting material in a granular form and in a nanoporous anhydrous state includes obtaining a starting material in a form of a dispersion or solution in a sublimable solvent or mixtures of sublimable solvents, forming graded droplets by atomization, freezing the graded droplets in a freezing medium at a controlled freezing rate of a least 100° C. per second to form frozen droplets and drying the frozen droplets by vacuum sublimation to obtain freeze-dried granules of the starting material in a nanoporous anhydrous state. The starting material in dispersion or solution form has a viscosity suitable for atomization and formation of graded droplets.Type: GrantFiled: April 12, 2001Date of Patent: September 30, 2003Assignee: The Procter & Gamble CompanyInventors: Srinivas Achanta, Paul Amaat France
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Patent number: 6470592Abstract: A process is provided for freeze-drying medicaments and foodstuffs comprising dissolving the foodstuffs or medicaments in a solvent, introducing the solution formed into a shell comprising a desiccating chamber of a shell-tube freeze-drying device to cause the solution to freeze in a tubular layer, and crushing and comminuting the freeze-dried liquid with a comminuting device to obtain a powder product.Type: GrantFiled: March 5, 2001Date of Patent: October 29, 2002Assignee: Kyowa Vacuum Engineering, Ltd.Inventors: Hiromiti Akimoto, Ryouji Sunama
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Patent number: 5727333Abstract: A process for drying a solution containing the material. The process includes the following steps: (1) subjecting the solution to vacuum-assisted freezing by introducing the solution into an evacuated chamber in the form of a spray, the droplets of which are at a sufficiently low temperature to ensure that they freeze at the vacuum pressure inside the chamber; (2) collecting the frozen droplets of the solution on a collecting surface of the chamber and controlling the temperature of the collecting surface and the pressure within the chamber so that the frozen solvent sublimes from the collected frozen droplets.Type: GrantFiled: November 4, 1996Date of Patent: March 17, 1998Assignee: Kinerton LimitedInventor: Michael Anthony Folan