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    Treatment of silica based soot or an article made of silica based soot
    4.
    发明授权
    Treatment of silica based soot or an article made of silica based soot 有权

    公开(公告)号：US10829403B2

    公开(公告)日：2020-11-10

    申请号：US13206004

    申请日：2011-08-09

    申请人： Nicolas LeBlond ,  Pushkar Tandon ,  Srinivas Vemury

    发明人： Nicolas LeBlond ,  Pushkar Tandon ,  Srinivas Vemury

    IPC分类号： C03B37/01 ,  C03B19/14 ,  C03B37/012 ,  C03B37/014

    摘要： One embodiment of the disclosure relates to a method of cleaning silica-based soot or an article made of silica-based soot, the method comprising the step of treating silica-based soot or the article made of silica-based soot with at least one of the following compounds: (i) a mixture of CO and Cl2 in a carrier gas such that the total concentration of CO and Cl2 in the mixture is greater than 10% (by volume, in carrier gas) and the ratio of CO:Cl2 is between 0.25 and 5; (ii) CCl4 in a carrier gas, such that concentration CCl4 is greater than 1% (by volume, in carrier gas). Preferably, the treatment by CCl4 is performed at temperatures between 600° C., and 850° C. Preferably, the treatment with the CO and Cl mixture is performed at temperatures between 900° C. and 1200° C. The carrier gas may be, for example, He, Ar, N2, or the combination thereof.

    METHOD FOR MANUFACTURING BENT OPTICAL FIBER
    6.
    发明申请
    METHOD FOR MANUFACTURING BENT OPTICAL FIBER 审中-公开

    公开(公告)号：US20180237331A1

    公开(公告)日：2018-08-23

    申请号：US15962198

    申请日：2018-04-25

    申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.

    发明人： Takuya NANJO

    IPC分类号： C03B37/15 ,  C03B37/01

    CPC分类号： C03B37/15 ,  C03B37/01 ,  G02B6/2552

    摘要： Provided is a method for manufacturing bent optical fibers with which bent optical fibers having a quality difference effectively reduced can be manufactured without a reduction of the manufacturing yield. In the present embodiment, an elastic bending process and a heating process are alternately repeated. In the elastic bending process, a movement restricting member rotatable around a revolving shaft is rotated while an optical fiber having its leading end portion held by the movement restricting member is fed toward the revolving shaft to form bent portions at a part of the optical fiber. In the heating process, the optical fiber is irradiated with a laser beam to relieve stress at the bent portions. Thus, multiple bent portions at which the stress is relieved are formed in the optical fiber along the longitudinal direction of the optical fiber.

    Systems and methods for making foamed glass using submerged combustion
    10.
    发明授权
    Systems and methods for making foamed glass using submerged combustion 有权

    公开(公告)号：US09676652B2

    公开(公告)日：2017-06-13

    申请号：US14607314

    申请日：2015-01-28

    申请人： JOHNS MANVILLE

    发明人： Jeffrey M Shock ,  Aaron Morgan Huber ,  Timothy G Swales

    IPC分类号： C03B19/08 ,  C03B5/235 ,  C03B37/01

    CPC分类号： C03B19/08 ,  C03B5/2356 ,  C03B37/01 ,  C03B2211/22 ,  C03B2211/23 ,  Y02P40/55

    摘要： Submerged combustion systems and methods of use to produce foamed glass. One system includes a submerged combustion melter having an outlet, the melter configured to produce an initial foamy molten glass having a density and comprising bubbles filled primarily with combustion product gases. The initial foamy molten glass is deposited directly onto or into a transport apparatus that transports the initial foamy molten glass to a downstream processing apparatus. An intermediate stage may be included between the melter and the transport apparatus. One intermediate stage is a channel that includes gas injectors. Another intermediate stage is a channel that produces an upper flow of a less dense glass and a relatively more dense glass lower flow. The upper flow may be processed into foamed glass products, while the more dense flow may be processed into dense glass products.