Patents by Inventor Wai-ming Chan
Wai-ming Chan 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).
-
Patent number: 11316576Abstract: A wireless communication system and a precoder device for use in such system. The precoder device includes a delay element arranged to introduce a delay to a plurality of sub-channels of a signal at a transmitter end of the communication system; wherein the delay in a plurality of sub-channels are associated with a process time of a receiver component at a receiver end of the communication system.Type: GrantFiled: October 30, 2019Date of Patent: April 26, 2022Assignee: City University of Hong KongInventors: Chi Wah Kok, Wing Shan Tam, Wai Ming Chan, Hing Cheung So
-
Publication number: 20210135731Abstract: A wireless communication system and a precoder device for use in such system. The precoder device includes a delay element arranged to introduce a delay to a plurality of sub-channels of a signal at a transmitter end of the communication system; wherein the delay in a plurality of sub-channels are associated with a process time of a receiver component at a receiver end of the communication system.Type: ApplicationFiled: October 30, 2019Publication date: May 6, 2021Inventors: Chi Wah Kok, Wing Shan Tam, Wai Ming Chan, Hing Cheung So
-
Patent number: 10174227Abstract: A sealant composition is provided; the sealant composition comprises latex emulsion, nanoporous particles, surfactant, anti-freezing agent, wetting agent, and water. The sealant composition of the present application achieves a good sealing performance for the puncture of the tire. Furthermore, the sealant composition is easy to use and non-perishable, and has a long shelf life, which endows the sealant composition with a good market prospect.Type: GrantFiled: December 18, 2013Date of Patent: January 8, 2019Assignee: TOP ALLIANCE TECHNOLOGY LIMITEDInventors: Koon Fung Lam, Wai Ming Chan
-
Patent number: 9260642Abstract: The present application relates to a sealant composition, comprising 80-95 wt % liquid carrier, 0.1-10 wt % gel material derived from a water soluble polymer, 1-10 wt % latex emulsion, 0.1-5 wt % rigid particles, and 0.1-5 wt % surfactant. The sealant composition can further comprise 0.1-1 wt % additives, such as anti-foaming agent, preservative, anti-corrosion additive, coloring agent and odorant, for corresponding functions. The present application also relates to a method of preparing the sealant composition.Type: GrantFiled: December 4, 2013Date of Patent: February 16, 2016Assignee: Top Alliance Technology LimitedInventors: Koon Fung Lam, Wai Ming Chan
-
Patent number: 9126375Abstract: Valve-through tire puncture sealant compositions including dissolved and undissolved natural bio-materials, anti-freezing agents and other rigid particles are invented. In the preparation, an aqueous solution with 0.1-10 wt % dissolved bio-materials and 0.1%-10 wt % tackifier is mixed with anti-freezing agent, in which 0.01-5 wt % rigid particles of bio-materials and other particles are suspended. Weight percentage of water and anti-freezing agent are 20-40 wt % and 20-70 wt % respectively. Trace amounts of additives such as coloring and preservative are possibly added to the sealant. The invention includes the method for preparing the sealant composition containing bio-materials. The proposed sealant compositions have several advantages: Environmentally friendly, insignificant settling, long shelf-life, etc. The sealant is capable of sealing puncture formed by less than or equal to 6.35 mm spike for long duration, i.e. more than 30 hours.Type: GrantFiled: October 18, 2011Date of Patent: September 8, 2015Assignee: Top Alliance Technology LimitedInventors: Koon Fung Lam, Wai Ming Chan
-
Publication number: 20150166848Abstract: A sealant composition is provided; the sealant composition comprises latex emulsion, nanoporous particles, surfactant, anti-freezing agent, wetting agent, and water. The sealant composition of the present application achieves a good sealing performance for the puncture of the tire. Furthermore, the sealant composition is easy to use and non-perishable, and has a long shelf life, which endows the sealant composition with a good market prospect.Type: ApplicationFiled: December 18, 2013Publication date: June 18, 2015Applicant: Top Alliance Technology LimitedInventors: Koon Fung Lam, Wai Ming Chan
-
Publication number: 20150152302Abstract: The present application relates to a sealant composition, comprising 80-95 wt % liquid carrier, 0.1-10 wt % gel material derived from a water soluble polymer, 1-10 wt % latex emulsion, 0.1-5 wt % rigid particles, and 0.1-5 wt % surfactant. The sealant composition can further comprise 0.1-1 wt % additives, such as anti-foaming agent, preservative, anti-corrosion additive, coloring agent and odorant, for corresponding functions. The present application also relates to a method of preparing the sealant composition.Type: ApplicationFiled: December 4, 2013Publication date: June 4, 2015Applicant: TOP ALLIANCE TECHNOLOGY LIMITEDInventors: Koon Fung Lam, Wai Ming Chan
-
Publication number: 20140221535Abstract: The present invention discloses a tire sealant and a preparation method thereof. The tire sealant comprises a solvent of 35%-95%, PVA gel of 0.05%-10%, block particles of 0.01%-5% and an additive of 0.1%-10%. The tire sealant can also comprise chitosan gel of 0.01%-5%. The method comprises the following steps: S1. polymer material particles are dissolved and precipitation is controlled to form suspended gel material in a liquid medium; S2. An additive is added into the liquid medium; and S3. block particles are added into the liquid medium containing the suspended gel material. When using the tire sealant and its preparation method in the present invention, the puncture formed by a spike with a diameter equal to or less than 6.35 mm can be sealed. Besides, the broken hole can be repaired between ?40? and 70?, and the sealing time can last for more than 48 hours.Type: ApplicationFiled: February 6, 2013Publication date: August 7, 2014Applicant: Top Alliance Technology LimitedInventors: Wai Ming Chan, Koon Fung Lam
-
Publication number: 20120118199Abstract: Valve-through tire puncture sealant compositions including dissolved and undissolved natural bio-materials, anti-freezing agents and other rigid particles are invented. In the preparation, an aqueous solution with 0.1-10 wt % dissolved bio-materials and 0.1%-10 wt % tackifier is mixed with anti-freezing agent, in which 0.01-5 wt % rigid particles of bio-materials and other particles are suspended. Weight percentage of water and anti-freezing agent are 20-40 wt % and 20-70 wt % respectively. Trace amounts of additives such as colouring and preservative are possibly added to the sealant. The invention includes the method for preparing the sealant composition containing bio-materials. The proposed sealant compositions have several advantages: Environmentally friendly, insignificant settling, long shelf-life, etc. The sealant is capable of sealing puncture formed by less than or equal to 6.35 mm spike for long duration, i.e. more than 30 hours.Type: ApplicationFiled: October 18, 2011Publication date: May 17, 2012Inventors: Koon Fung Lam, Wai Ming Chan
-
Patent number: 7383651Abstract: A motion displaying photo frame includes a frame with a rear plate, an insertion groove, a lenticluar raster, a photo paper and a driving unit having an eccentric wheel. An opening or notch is provided on the lower portion of the raster. The raster can be mounted in the frame through the insertion grooves and can be moved up and downward or left and rightward. The photo paper can be inserted into the frame through inserting grooves and located between the raster and the rear plate. The eccentric wheel can be inserted into the opening or notch of the raster which can be moved up and downward or left and rightward through the actuation of the driving unit. The fine details of each of two or more constituent images can be viewed with clarity as compared with a conventional photo paper.Type: GrantFiled: August 31, 2004Date of Patent: June 10, 2008Assignee: Lightbox Effects LimitedInventor: Tommy Wai Ming Chan
-
Publication number: 20070226377Abstract: An information handling system has the capability of matching UART baud rates and other serial data parameters between a system UART and baseboard management controller (BMC) UART used for serial-over-LAN (SOL) access to the information handling system via an Ethernet connection, either locally or remotely by a user, administrator, maintenance technician, etc. The BMC may snoop set-up data sent to the control register(s) of the system UART, look up a corresponding baud rate from a baud rate table of the BMC and set the BMC UART to match the system UART baud rate and other serial data parameters so that SOL access to the information handling system is available no matter what baud rate and/or serial data parameters an application may have programmed the system UART configuration registers. The BMC may snoop system UART data over a simple data bus such a low pin count (LPC) bus.Type: ApplicationFiled: February 9, 2006Publication date: September 27, 2007Inventors: Elie Jreij, Wai-ming Chan, Anand Joshi, Pedro Lopez
-
Publication number: 20040218038Abstract: Only 1 sheet from the photoed original picture is needed to perform the purpose of Lenticular-stereo printing.Type: ApplicationFiled: January 12, 2004Publication date: November 4, 2004Inventor: Tommy Wai Ming Chan