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160results about How to "Efficient damage" patented technology

Support for tissue regeneration and process for producing the same

ActiveUS7445793B2Excellent in retention and grafting abilityPrevent intrusionBiocidePowder deliveryFreeze-dryingBiology
The present invention provides a scaffold in which cells can be stably retained and grafted in a uniform distribution state in the culture, preferable proliferation ability and viability can be secured, and particularly in the case of cartilage, fixation treatment such as suture can be carried out in the transplantation into affected parts after the culture, and the mechanical strength is provided sustainable for (weighted) compression at the initial stage of transplantation.The present invention relates to a 3-dimensional porous scaffold for tissue regenerationwhich comprises a structure composed of vertically long-shaped pores having a pore diameter of not less than 10 μm to not more than 500 μm and pore length of not less than 20 μm to not more than 1 cm being juxtaposedly arrangedobtained by a production process comprising rapid freeze-drying as a key technology.Further, the invention relates to the above 3-dimensional porous scaffold in which seeding properties of cells are improved by a pore enlargement treatment of one side face by a separation operation, a salt elution operation of a surface part, or a combination of these operations. It becomes possible to produce a 3-dimensional cell combination having excellent degree of tissue formation and medical treatment effect by seeding a cell or precursor cell derived from a tissue in this scaffold, and culturing them in an artificial environment and / or the living body.
Owner:GC CORP +2

Expansion tank device, process for fabricating expansion tank device, and liquid cooling radiator

An expansion tank device 14 comprises a tank installation base 16 having a cooling liquid channel 17 and an expansion tank 18 provided on the upper surface of the installation base 16. The base 16 has a communication hole 19 for holding space above the upper surface thereof in communication with the cooling liquid channel 17. The expansion tank 18 has a tank main body 21 including an upwardly bulging portion 22 having an opening at its lower end, and a bottom plate 23 joined to the lower end of the tank main body 21 for closing the lower-end opening of the bulging portion 22 and joined to the upper surface of the tank installation base 16. The bottom plate 23 is provided at a portion thereof corresponding to the communication hole 19 with a through hole 25 communicating with the communication hole 19. The bottom plate 23 is provided with a baffle plate 26 formed along the entire circumference of the inner peripheral edge thereof defining the through hole 25 and slanting upwardly toward the center of the through hole 25. The expansion tank device 14 removes the air in the cooling liquid from the circulating system, precludes the system from breaking and prevents the decrease in the amount of cooling liquid within the circulating system.
Owner:SHOWA DENKO KK +1

Bjt drive scheme

The invention generally relates to switch mode power converters (SMPCs). and methods for providing supplementary base drive to a bipolar transistor of an SMPC, and more particularly to a switching control circuit for a SMPC, a said SMPC having an inductive component coupled to receive power from an input to the SMPC, a bipolar transistor coupled to control current flow in the inductive component, an auxiliary power rail, a charge store for supplying power via the auxiliary rail to a switching control circuit for driving the bipolar transistor, and a bootstrap circuit for bleeding current from the input to the bipolar transistor to thereby provide an amplified current to the charge store, the switching control circuit comprising: a base current line for coupling to a base terminal of a said bipolar transistor, an emitter current line for coupling to an emitter terminal of a said bipolar transistor, an auxiliary line for coupling to a said auxiliary power rail, and at least one reference line for coupling to a reference voltage; a base current switch configured to controllably couple a base current source to the base current line; an emitter current switch configured to controllably couple the emitter current line to a said reference line; a bootstrap element for bleeding current from the emitter current line to the auxiliary line, the bootstrap element further operable to block a said current according to a current or voltage bias; a base discharge switch configured to controllably bleed current from the base current line to a said reference line; and a supplementary base drive line for coupling to a series circuit comprising a supplementary base drive resistor and current control element coupled in series, a said series circuit for bleeding current from a said input to a said base terminal, a said current control element for blocking current flow from a said bootstrap circuit to a said supplementary base drive resistor.
Owner:POWER INTEGRATIONS INC
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