公开(公告)号：US20190300426A1

公开(公告)日：2019-10-03

申请号：US16369613

申请日：2019-03-29

Applicant: CORNING INCORPORATED

Inventor： Qiang Fu ,  Jennifer Lynn Hunt ,  Rostislav Vatchev Roussev ,  Charlene Marie Smith ,  Alana Marie Whittier ,  Taylor Marie Wilkinson

IPC: C03C21/00 ,  H05K5/03 ,  C03C10/00

Abstract: Disclosed herein are glass-ceramic article having a first surface, a second surface opposing the first surface, a first region extending from the first surface to a first depth d1, and a second region extending from a depth greater than or equal to d1 to a second depth d2, wherein the second region comprises a crystalline phase and a glass phase, and wherein an area percentage % of crystals in the first region is less than an area percentage % of crystals in the second region. In some embodiments, a compressive stress layer extends from the first surface to a depth of compression (DOC), wherein the DOC is greater than or equal to 0.05 mm an average compressive stress in the first region is greater than or equal to 50 MPa. In some embodiments, the DOC is greater than d1; a reduce modulus of the first region is less than the reduced modulus of the second region; and/or a hardness of the first region is less than the hardness of the second region.

公开(公告)号：US20190177210A1

公开(公告)日：2019-06-13

申请号：US16310140

申请日：2017-06-26

Applicant: CORNING INCORPORATED ,  IVOCLAR VIVADENT AG

Inventor： George Halsey Beall ,  Marc Dittmer ,  Qiang Fu ,  Wolfram Holand ,  Markus Rampf ,  Christian Ritzberger ,  Charlene Marie Smith

IPC: C03C10/00 ,  C03C4/00 ,  A61K6/02 ,  A61K6/027 ,  C03B32/02

Abstract: ZrO2-toughened glass ceramics having high molar fractions of tetragonal ZrO2 and fracture toughness value of greater than 2 MPa·m1/2. The glass ceramic may also include also contain other secondary phases that may be beneficial for toughening or for strengthening through an ion exchange process. Additional second phases may also decrease the coefficient of thermal expansion of the glass ceramic. A method of making such glass ceramics is also provided.

公开(公告)号：US20190161396A1

公开(公告)日：2019-05-30

申请号：US16202731

申请日：2018-11-28

Applicant: CORNING INCORPORATED

Inventor： Anthony Vincent DeCeanne ,  Qiang Fu ,  Alana Marie Whittier

IPC: C03C10/00 ,  C03C4/18 ,  C03C4/02 ,  H05K5/00 ,  H05K5/03

Abstract: A black β-spodumene glass ceramic is provided. The glass ceramic includes β-spodumene as a primary crystal phase and gahnite as a minor crystal phase. The glass ceramic is characterized by the color coordinates: L*: 20.0 to 40.0, a*: −1.0 to 0.5, and b*: −5.0 to 1.0. The glass ceramic may be ion exchanged. Methods for producing the glass ceramic are also provided.

公开(公告)号：US20190161395A1

公开(公告)日：2019-05-30

申请号：US16202629

申请日：2018-11-28

Applicant: CORNING INCORPORATED

Inventor： George Halsey Beall ,  Qiang Fu ,  Charlene Marie Smith

IPC: C03C10/00 ,  C03C4/18 ,  C03C4/02 ,  H05K5/00 ,  H05K5/03

Abstract: A black lithium silicate glass ceramic is provided. The glass ceramic includes lithium silicate as a primary crystal phase and at least one of petalite, β-quartz, β-spodumene, cristobalite, and lithium phosphate as a secondary crystal phase. The glass ceramic is characterized by the color coordinates: L*: 20.0 to 40.0, a*: −1.0 to 1.0, and b*: −5.0 to 2.0. The glass ceramic may be ion exchanged. Methods for producing the glass ceramic are also provided.

公开(公告)号：US20190161393A1

公开(公告)日：2019-05-30

申请号：US16203002

申请日：2018-11-28

Applicant: CORNING INCORPORATED

Inventor： Huayun Deng ,  Ye Fang ,  Qiang Fu ,  John Christopher Mauro ,  Michael S. Pambianchi

IPC: C03C4/00 ,  A61K8/25 ,  A61K8/21 ,  A61Q11/00 ,  C03C3/064

Abstract: A dental formulation including: a bioactive glass composition as defined herein, in an effective amount; and a suitable carrier as defined herein, in an effective amount. Also disclosed is a method of making and using the dental formulation to treat, for example, dentin sensitivities.

公开(公告)号：US20190160201A1

公开(公告)日：2019-05-30

申请号：US16202786

申请日：2018-11-28

Applicant: CORNING INCORPORATED

Inventor： Huayun Deng ,  Qiang Fu ,  John Christopher Mauro

IPC: A61L27/10 ,  C03C10/00 ,  C03C10/16 ,  C03C4/00 ,  C03C4/18 ,  A61L24/02 ,  A61L24/00 ,  A61L27/12 ,  A61L27/04 ,  A61L27/02

Abstract: A chemically strengthened bioactive glass-ceramic composition as defined herein. Also disclosed are methods of making and using the disclosed compositions.

公开(公告)号：US20190152834A1

公开(公告)日：2019-05-23

申请号：US16257529

申请日：2019-01-25

Applicant: Corning Incorporated

Inventor： George Halsey Beall ,  Qiang Fu ,  Charlene Marie Smith ,  Randall Eugene Youngman

IPC: C03B32/02 ,  C03C10/00 ,  C03C3/097 ,  C03C21/00 ,  C03C3/093

Abstract: Crystallizable glasses, glass-ceramics, IXable glass-ceramics, and IX glass-ceramics are disclosed. The glass-ceramics exhibit β-spodumene ss as the predominant crystalline phase. These glasses and glass-ceramics, in mole %, include: 60-75 SiO2; 10-18 Al2O3; 5-14 Li2O; and 4.5 B2O3. The glass-ceramics also have a Vickers initiation crack threshold of at least about 25 kgf.

公开(公告)号：US20190048318A1

公开(公告)日：2019-02-14

申请号：US16163013

申请日：2018-10-17

Applicant: Corning Incorporated

Inventor： Huayun Deng ,  Qiang Fu ,  John Christopher Mauro

IPC: C12N5/077 ,  C03C10/00 ,  C03C3/118 ,  C03C3/11 ,  C03C3/097 ,  A61K35/32 ,  C03C4/00

Abstract: A bioactive glass-ceramic composition as defined herein. Also disclosed are methods of making and using the disclosed compositions.

公开(公告)号：US10189735B2

公开(公告)日：2019-01-29

申请号：US15668190

申请日：2017-08-03

Applicant: CORNING INCORPORATED

Inventor： George Halsey Beall ,  Qiang Fu ,  Charlene Marie Smith ,  Randall Eugene Youngman

IPC: C03C10/12 ,  C03B32/02 ,  C03C21/00 ,  C03C10/00 ,  C03C3/093 ,  C03C3/097

Abstract: Crystallizable glasses, glass-ceramics, IXable glass-ceramics, and IX glass-ceramics are disclosed. The glass-ceramics exhibit β-spodumene ss as the predominant crystalline phase. These glasses and glass-ceramics, in mole %, include: 60-75 SiO2; 10-18 Al2O3; 5-14 Li2O; and 4.5 B2O3. The glass-ceramics also have a Vickers initiation crack threshold of at least about 25 kgf.

公开(公告)号：US09868663B2

公开(公告)日：2018-01-16

申请号：US15200571

申请日：2016-07-01

Applicant: CORNING INCORPORATED

Inventor： Samir Biswas ,  Qiang Fu ,  David Myron Lineman ,  Ronald Leroy Stewart

IPC: C03B5/16 ,  C03C10/12 ,  C03C10/00 ,  C03C21/00 ,  C03C3/093 ,  C03C1/02

CPC classification number: C03C1/02 ,  C03B5/16 ,  C03C3/093 ,  C03C10/0027 ,  C03C21/002 ,  C03C2204/04 ,  Y10T428/315

Abstract: A glass ceramic precursor glass and a glass ceramic having low levels of rhodium and a method of controlling the amount of rhodium in such glasses and glass ceramics. The precursor glass and glass ceramic contain from about 1 ppm to about 10 ppm and, in certain embodiments, from about 1 ppm to about 6 ppm rhodium. The method of controlling of reducing rhodium dissolution from a rhodium-containing material such as, for example, an alloy into a glass melt comprises controlling and/or lowering the partial pressure of oxygen at the rhodium-containing vessel/glass interface by imposing a high humidity condition around the external (non-glass-contact) surface of the rhodium-containing material. The lower concentration of rhodium minimizes its coloring effect on the white color of the glass ceramic.