Patents by Inventor Tu Lee
Tu Lee 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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Publication number: 20220184429Abstract: A full-cover type portable air purifier includes a breathing mask provided with a first air inlet, an air cleaning device having a fan mounted in a housing thereof to drive outside air from the first air inlet into the breathing mask, an air filter set in the breathing mask, and a wearing device designed to be worn on the user's head or ears so that the breathing mask can cover the user's mouth and nose. In this way, it can filter dust, bacteria and viruses and facilitate wearing during activities.Type: ApplicationFiled: December 16, 2020Publication date: June 16, 2022Inventor: Mao-Tu Lee
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Patent number: 11313374Abstract: An industrial ceiling fan structure utilizes a coupling structure between the fan blades and the motor main unit and the design of a pressing member attached to the mounting segment of the root of each fan blade to enhance the fan blade mounting strength. Furthermore, the ceiling fan motor provides an outer race and an inner race to secure the permanent magnets without an adhesive, thereby preventing the permanent magnets from loosening and improving the service life of the ceiling fan motor. In addition, through the heat dissipation structure of the outer casing of the motor main unit and the structure of the lamp, the heat dissipation of both the lamp and the motor main unit of the ceiling fan can be achieved.Type: GrantFiled: December 7, 2019Date of Patent: April 26, 2022Inventor: Mao-Tu Lee
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Publication number: 20220023790Abstract: A neck-mounted air purifier includes an air purifier host with a shell-less radial fan and an air filter mounted therein, and a collar connected to the air purifier host. The air purifier host is provided with an air intake panel and a transparent shield, and has a middle partition mounted therein to separate a fan rotation space for the mounting of the shell-less radial fan and a filter installation room for the mounting of the air filter. Two plug connection portions are provided at the air purifier host for the connection of two opposite flexible tubes of the collar, so that the transparent shield can reliably guide the filtered air to the selected blowing position.Type: ApplicationFiled: December 1, 2020Publication date: January 27, 2022Inventor: Mao-Tu Lee
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Publication number: 20200263700Abstract: An industrial ceiling fan structure utilizes a coupling structure between the fan blades and the motor main unit and the design of a pressing member attached to the mounting segment of the root of each fan blade to enhance the fan blade mounting strength. Furthermore, the ceiling fan motor provides an outer race and an inner race to secure the permanent magnets without an adhesive, thereby preventing the permanent magnets from loosening and improving the service life of the ceiling fan motor. In addition, through the heat dissipation structure of the outer casing of the motor main unit and the structure of the lamp, the heat dissipation of both the lamp and the motor main unit of the ceiling fan can be achieved.Type: ApplicationFiled: December 7, 2019Publication date: August 20, 2020Inventor: Mao-Tu Lee
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Patent number: 9506265Abstract: A cross-type earthquake platform includes a bearing block, two guide rails, two roller holders and multiple needle rollers. The bearing block has sliding grooves located at opposing top and bottom walls thereof and respectively extended in X-axis and Y-axis, and needle roller guide grooves located in horizontal bottom wall and upright sidewalls of each sliding groove. Each guide rail has needle roller guide grooves located at the top wall thereof. The needle rollers are mounted in the roller holders to support the guide rails at the opposite top and bottom walls of the bearing block. Further, retractable dust covers are respectively capped on the guide rails to protect the needle rollers against external dust.Type: GrantFiled: May 4, 2016Date of Patent: November 29, 2016Inventor: Mao-Tu Lee
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Patent number: 9435375Abstract: A linear slide over-molding fabrication method for producing a linear slide by putting a metal base onto a core in an injection mold and filling a molten plastic in the injection mold to mold guide structures on the metal base for guiding cylindrical rolling elements. The metal base has a track groove for matching with a linear guideway, guide structure attachment portions at two opposite sides of the track groove, and first joint surfaces at two opposite sides relative to the guide structure attachment portions. The core has guide structure forming portions corresponding to the guide structure attachment portions, second joint surfaces respectively facing toward the first joint surfaces with a gap about 0.02 mm˜0.04 mm therebetween. Thus, the applied engineering plastic material can fill up the guide structure forming portions to form a plurality of guide structures on the two opposite sidewalls of the track groove.Type: GrantFiled: December 22, 2014Date of Patent: September 6, 2016Inventor: Mao-Tu Lee
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Publication number: 20160178003Abstract: A linear slide over-molding fabrication method for producing a linear slide by putting a metal base onto a core in an injection mold and filling a molten plastic in the injection mold to mold guide structures on the metal base for guiding cylindrical rolling elements. The metal base has a track groove for matching with a linear guideway, guide structure attachment portions at two opposite sides of the track groove, and first joint surfaces at two opposite sides relative to the guide structure attachment portions. The core has guide structure forming portions corresponding to the guide structure attachment portions, second joint surfaces respectively facing toward the first joint surfaces with a gap about 0.02 mm˜0.04 mm therebetween. Thus, the applied engineering plastic material can fill up the guide structure forming portions to form a plurality of guide structures on the two opposite sidewalls of the track groove.Type: ApplicationFiled: December 22, 2014Publication date: June 23, 2016Inventor: Mao-Tu Lee
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Patent number: 9145919Abstract: A speed-reduction transmission bearing includes a first outer race and a second outer race, each having a different number of inner teeth and outer teeth and being attached to each other, rolling elements set between the first and second outer races to prevent separation between the first and second outer races in axial or radial direction, an inner race rotatably mounted within the first and second outer races, and a wave generator rotatable to push the inner race, forcing the outer teeth of the inner race to partially mesh with the inner teeth of the first and second outer race. Thus, by means of rotation of a tooth number difference, the invention achieves high reduction ratio transmission.Type: GrantFiled: August 14, 2013Date of Patent: September 29, 2015Inventor: Mao-Tu Lee
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Publication number: 20150049975Abstract: A speed-reduction transmission bearing includes a first outer race and a second outer race, each having a different number of inner teeth and outer teeth and being attached to each other, rolling elements set between the first and second outer races to prevent separation between the first and second outer races in axial or radial direction, an inner race rotatably mounted within the first and second outer races, and a wave generator rotatable to push the inner race, forcing the outer teeth of the inner race to partially mesh with the inner teeth of the first and second outer race. Thus, by means of rotation of a tooth number difference, the invention achieves high reduction ratio transmission.Type: ApplicationFiled: August 14, 2013Publication date: February 19, 2015Inventor: Mao-Tu Lee
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Patent number: 8865093Abstract: A polymorph, a polymorph screening system, and a polymorph preparing and screening method are disclosed. The polymorph preparing and screening method includes the following steps: providing a plurality of substrates of different materials; causing an organic material to grow crystals on the plurality of substrates through solution-cooling crystallization process, so that a plurality of polymorphs with different characteristics are prepared; and screening the plurality of polymorphs prepared in the previous step to obtain polymorphs with desired characteristics.Type: GrantFiled: October 20, 2011Date of Patent: October 21, 2014Assignee: National Central UniversityInventors: Tu Lee, Shih-Chia Chang, Jen-Fan Peng, Pu-Yun Wang, Yu-Kun Lin
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Patent number: 8653267Abstract: The present invention discloses a co-crystal compound of optical devices. The co-crystal compound is crystallized out with hydrogen bonding by a temperature fluctuation method after mixing small organic molecules without optoelectronic properties and organic molecules having heterocyclic rings with optoelectronic properties. The photoluminescence (PL) intensity of this hydrogen-bonded co-crystal compound according to the present invention can vary with a variety of the small organic molecules without optoelectronic properties, so as to modulate the PL intensity.Type: GrantFiled: May 11, 2010Date of Patent: February 18, 2014Assignee: National Central UniversityInventors: Tu Lee, Pu-Yun Wang
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Publication number: 20130100981Abstract: The present invention provides a system and a method of detecting a sublimation point, preferably applied to organic molecules. The system of detecting a sublimation point comprises: a heater, a capillary device, a vacuum pump, an ultraviolet light source, a photography device, a digital vacuum meter and a needle valve. The system of detecting a sublimation point is suitable for detecting the sublimation point of an organic light emitting molecule such as tris(8-hydroxyquinolinato) aluminum (Alq3) and tris(phenylpyridine) iridium (Ir(ppy)3). The needle valve can be used for controlling air pressure to measure the sublimation point under different pressures. Advantageously, the required quantity of organic molecules can be below 1 mg, thus not only saving the organic molecules, but also detecting the sublimation point without contaminating apparatuses.Type: ApplicationFiled: February 17, 2012Publication date: April 25, 2013Inventors: Tu LEE, Jwo-Huei Jou, Meng-Hsun Tsai, Yu-Ren Syue
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Publication number: 20130060484Abstract: A method of establishing a database of gas molecules is disclosed. In this method, a metal-organic framework absorbs gas molecules of a guest material. Thereafter, after a predetermined time, the thermogravimetric analyzer (TGA) is utilized to make sure that the gas molecules have been adsorbed by the metal-organic framework. Finally, the metal organic framework with the gas molecules adsorbed thereon is analyzed by fluorescence spectrophotometer, and the light-emitting wavelength and waveform are recorded to establish a database of gas molecules.Type: ApplicationFiled: September 1, 2011Publication date: March 7, 2013Applicant: NATIONAL CENTRAL UNIVERSITYInventors: Tu Lee, Cheng-Hsin Liu, Hung-Lin Lee
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Patent number: 8273873Abstract: A sucrose of a conformational polymorph and its manufacturing method are disclosed. The sucrose is a Form II sucrose having a melting point of 140-180° C., and furfuryl alcohol is added into a saturated sucrose solution by a reverse solution method, such that the saturated solution is recrystallized to form a new sucrose. The sucrose of this conformational polymorph has a melting point lower than the melting point of a general Form I sucrose, and the solubility of the Form II sucrose is different from the solubility of the Form I sucrose. Thus the Form II sucrose can be used as an excipient of medicines, sacrificial fiber blood vessel network structure for cell cultivations, or the manufacture of an optical interference wavy device. Since the hydrogen bonds in the molecular structure of the Form II sucrose and the Form I sucrose are different, the mechanoluminescence of the sucrose is affected.Type: GrantFiled: September 21, 2009Date of Patent: September 25, 2012Assignee: National Central UniversityInventors: Tu Lee, Gen-Da Chen
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Patent number: 8263970Abstract: The present invention discloses a manufacturing method for an optical device having a solvate, comprising the following steps: providing a substrate, depositing a solute on the substrate, and placing the substrate in the vapor environment of a solvent such that the solvent and the solute on the substrate form a solvate exhibiting optical properties. Furthermore, the present invention provides an optical device having a solvate, which modulates the photoluminescence (PL) intensity of the optical device via the solvate. The optical device is obtained by means of the above-described manufacturing method.Type: GrantFiled: September 14, 2009Date of Patent: September 11, 2012Assignee: National Central UniversityInventors: Tu Lee, Shih-Chia Chang, Jen-Fan Peng
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Patent number: 8202987Abstract: A new sucrose is obtained through the present invention. The new sucrose has a lower solubility and a lower melting point. Thus, the new sucrose has a higher stability. The new sucrose obtained through the present invention can be used as an added functionality excipient of drug in pharmaceutical industry. And the new sucrose can also be used in sugar and food industries.Type: GrantFiled: January 23, 2008Date of Patent: June 19, 2012Assignee: National Central UniversityInventors: Tu Lee, Yu-Sheng Lin
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Publication number: 20120134868Abstract: A rotary sliding-vane compressor includes an air cylinder, a shaft eccentrically mounted in the air cylinder and rotatable by a motor, sliding vanes coupled to and movable back and forth along radially extending sliding grooves of the shaft, and an oil-gas separating device mounted in the air output port of the air cylinder. The shaft has an axial hole located on one end thereof and coupled to the output shaft of the motor, and two axle bushes respectively mounted on the two opposite ends. Each sliding vane comprises a metal substrate having evenly distributed through holes, and a covering material molded on the surface of the metal substrate and filled up the through holes and having a plurality of discharge grooves.Type: ApplicationFiled: November 29, 2010Publication date: May 31, 2012Applicant: KINGSTON COMP CO., LTD.Inventors: Mao-Tu Lee, Cheng-En Lee, Wen-Shiang Tsai
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Patent number: 8134025Abstract: The present invention fabricates mesocrystals of organic and organo-metallic compounds. Supersaturated solutions are made with different sums of an organic or organo-metallic compound and the organic or organo-metallic compound is added with an excipient. Through a water bath, mesocrystals are obtained from the supersaturated solutions with well-faceted nucleation and growth. Different polymorphisms are induced with different ratios of enantiomers. And the dissolution rate for fabricating the API is enhanced.Type: GrantFiled: March 14, 2008Date of Patent: March 13, 2012Assignee: National Central UniversityInventors: Tu Lee, Chyong-Wen Zhang
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Publication number: 20120035064Abstract: A polymorph, a polymorph screening system, and a polymorph preparing and screening method are disclosed. The polymorph preparing and screening method includes the following steps: providing a plurality of substrates of different materials; causing an organic material to grow crystals on the plurality of substrates through solution-cooling crystallization process, so that a plurality of polymorphs with different characteristics are prepared; and screening the plurality of polymorphs prepared in the previous step to obtain polymorphs with desired characteristics.Type: ApplicationFiled: October 20, 2011Publication date: February 9, 2012Inventors: Tu Lee, Shih-Chia Chang, Jen-Fan Peng, Pu-Yun Wang, Yu-Kun Lin
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Publication number: 20120009334Abstract: An organo-optoelectronic nanowire is fabricated. It is made through a one-step unit operation under a low temperature. An organo-optoelectronic template is obtained for the fabrication, whose idea is a bio-inspired one. The nanowire obtained has a high efficiency and a high surface area; and, heat generated on operation is easily emitted. Thus, the method has great potential for future use on optoelectronic devices.Type: ApplicationFiled: September 23, 2011Publication date: January 12, 2012Applicant: NATIONAL CENTRAL UNIVERSITYInventors: Tu Lee, Ming-Shiou Lin