Patents by Inventor Yunsheng SUN

Yunsheng SUN 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).

  • Publication number: 20230271256
    Abstract: There is provided a method of fabricating a three-dimensional object. The method includes supplying, flattening, and collecting. The supplying supplies, with a powder supplier, powder to a fabrication chamber. The fabrication chamber includes a fabrication stage to store powder and an outer edge portion outside the fabrication stage, the outer edge portion having one bottom surface. The flattening flattens, with a flattener, the powder supplied by the supplying. The collecting collects, with a powder collector, the powder having overflowed from the fabrication stage to the outer edge portion by the flattening into the fabrication stage.
    Type: Application
    Filed: February 16, 2023
    Publication date: August 31, 2023
    Applicant: Ricoh Company, Ltd.
    Inventors: Kohichiroh Tanaka, Shozo Sakura, Yohei Osanai, Yunsheng Sun
  • Publication number: 20230173612
    Abstract: A thermos cup vacuumizing device and method are provided. The thermos cup vacuumizing device includes a pre-vacuumizing chamber, a heating chamber, a welding chamber, and a cooling chamber. A continuous conveying device is provided at a bottom of each of the chambers. The thermos cup vacuumizing device further includes a controllable and movable laser welding device and multiple transparent windows. A laser beam of the laser welding device passes through the transparent windows to melt a welding ball at provided at a hole in the center of the bottom of the thermos cup. A vertically movable inlet valve is provided at an inlet of the pre-vacuumizing chamber, and a vertically movable outlet valve is provided at an outlet of the cooling chamber. The present disclosure realizes the continuous vacuumizing operation on the thermos cups, improves the product qualification rate and processing efficiency, and realizes automatic mass production.
    Type: Application
    Filed: October 14, 2022
    Publication date: June 8, 2023
    Applicant: ZHEJIANG HAERS VACUUM CONTAINERS CO., LTD.
    Inventors: Jinfa LI, Jinsheng DU, Wei LI, Yunsheng SUN, Runjun LIU, Yangbo OU
  • Patent number: 11590685
    Abstract: A fiber aggregation contains fiber containing a thermoplastic resin, each of the fiber being mutually joined and aligned.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: February 28, 2023
    Assignee: RICOH COMPANY, LTD.
    Inventors: Sohichiroh Iida, Hitoshi Iwatsuki, Mitsuru Naruse, Satoshi Ogawa, Yunsheng Sun
  • Publication number: 20220363008
    Abstract: A three-dimensional fabrication apparatus includes a flattening member and a rotation drive unit. The flattening member moves on layers of a fabrication material to flatten an upper surface of the layers of the fabrication material. The rotation drive unit rotates the flattening member and determines a circumferential position of the flattening member.
    Type: Application
    Filed: April 11, 2022
    Publication date: November 17, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Shota HAYAKAWA, Masato TSUJI, Yunsheng SUN, Haruyuki SUZUKI, Hayato FUJITA
  • Patent number: 11241825
    Abstract: A resin powder contains a resin, wherein the proportion of fine powder having a number diameter of 40 percent or less of a mean number diameter Mn of the resin powder is 30 percent or less in the resin powder.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: February 8, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yunsheng Sun, Toshiyuki Mutoh, Hitoshi Iwatsuki, Shigenori Yaguchi, Mitsuru Naruse, Sohichiroh Iida
  • Publication number: 20210023778
    Abstract: A resin powder for solid freeform fabrication is provided which maintains the degree of smoothness of a thin layer formed with the resin powder for solid freeform fabrication even when the speed of supplying the resin powder for solid freeform fabrication using a recoater is increased and reduce lowering of the degree of smoothness of the thin layer caused by the resin powder for solid freeform fabrication that has scattered and accumulated on the recoater and others.
    Type: Application
    Filed: July 23, 2020
    Publication date: January 28, 2021
    Inventors: Sohichiroh Iida, Hitoshi Iwatsuki, Satoshi Ogawa, Yunsheng Sun
  • Publication number: 20200362142
    Abstract: Provided is a thermoplastic resin powder, including a heat-resistant antistatic agent in an amount of 0.01% by mass or greater but 30.0% by mass or less. Also provided is a resin powder, including resin particles and resin fine particles having a number-based primary particle diameter of 1.50 micrometers or less.
    Type: Application
    Filed: May 14, 2020
    Publication date: November 19, 2020
    Inventors: Akira SAITO, Yasuyuki YAMASHITA, Satoshi OGAWA, Yunsheng SUN, Shinzo HIGUCHI
  • Publication number: 20200322621
    Abstract: A video decoder includes a stream dividing circuit configured to divide a stream to obtain a plurality of sub-streams, a processing circuit including a plurality of processing units configured to perform entropy decoding and inverse quantization on the plurality of sub-streams in parallel to obtain inversely quantized data, an inverse transform circuit configured to inversely transform the inversely quantized data to obtain inversely transformed data, and an output circuit configured to output a decoded video according to the inversely transformed data.
    Type: Application
    Filed: June 23, 2020
    Publication date: October 8, 2020
    Inventors: Jianhua ZHANG, Yunsheng SUN, Chengzhang YANG, Bin HAN
  • Publication number: 20200079011
    Abstract: A resin powder contains a resin containing particles, wherein the proportion of the particles in an aspect ratio range X represented by the following inequality 1 is 50 percent by number or more in a number distribution of an aspect ratio of the resin powder: A50?1?X?A50+1 Inequality 1, where A50 represents a median of the aspect ratio.
    Type: Application
    Filed: September 6, 2019
    Publication date: March 12, 2020
    Inventors: Hitoshi IWATSUKI, Sohichiroh IIDA, Yunsheng SUN, Satoshi OGAWA
  • Publication number: 20200070468
    Abstract: A fiber aggregation contains fiber containing a thermoplastic resin, each of the fiber being mutually joined and aligned.
    Type: Application
    Filed: September 3, 2019
    Publication date: March 5, 2020
    Inventors: Sohichiroh IIDA, Hitoshi IWATSUKI, Mitsuru NARUSE, Satoshi OGAWA, Yunsheng SUN
  • Publication number: 20200070412
    Abstract: A resin powder contains a resin, wherein the proportion of fine powder having a number diameter of 40 percent or less of a mean number diameter Mn of the resin powder is 30 percent or less in the resin powder.
    Type: Application
    Filed: August 29, 2019
    Publication date: March 5, 2020
    Inventors: Yunsheng SUN, Toshiyuki Mutoh, Hitoshi Iwatsuki, Shigenori Yaguchi, Mitsuru Naruse, Sohichiroh IIDA