Patents by Inventor Ying-Yuh Lu

Ying-Yuh Lu 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: 5733570
    Abstract: An absorbent dressing that includes a transparent, elastomeric, body fluid-absorbing composition that is essentially free of hydrocolloidal gel particles. The composition includes the reaction product of:(a) 20 to 80 parts by weight of an acrylic or methacrylic acid ester of a non-tertiary alcohol having between 4 and 14 carbon atoms, inclusive;(b) 30 to 60 parts by weight of a hydrophilic, ethylenically unsaturated monomer; and p1 (c) 5 to 25 parts by weight of a polar, ethylenically unsaturated monomer different from the hydrophilic, ethylenically unsaturated monomer. The composition is capable of absorbing moderate to heavy amounts of body fluids, while retaining its structural integrity and transparency.
    Type: Grant
    Filed: September 5, 1996
    Date of Patent: March 31, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Yen-Lane Chen, Chung-I Young, Ying-Yuh Lu, Timothy M. Dietz
  • Patent number: 5696199
    Abstract: A fluid permeable composite structure having active particulate bonded together using a pressure-sensitive adhesive (PSA) polymer microparticulate. Use of the PSA polymer microparticulate to bond the active particulate together produces a bonded structure that, unlike previously-developed active bonded structures, is flexible and therefore can be conformed into a variety of shapes. The shaped structures may be used as gaseous filters in a wide variety of respirators.
    Type: Grant
    Filed: July 23, 1996
    Date of Patent: December 9, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Raymond Senkus, Chung I. Young, Leonard W. Barrett, Ying-Yuh Lu
  • Patent number: 5674561
    Abstract: A polymerized microemulsion pressure sensitive adhesive composition is described. The composition preferably has a biocontinuous structure of a continuous phase of a hydrophobic pressure sensitive adhesive polymer and a continuous phase of a hydrophilic polymer. The bulk properties of both polymers are retained in the bicontinuous structure. The composition is prepared from a microemulsion comprising a free-radically ethylenically unsaturated polar amphiphilic or hydrophilic monomer or oligomer in the aqueous phase, a free-radically ethylenically unsaturated hydrophobic monomer, having a glass transition temperature suitable for forming a pressure sensitive adhesive, in the oil phase, water, and surfactant. Uses for the pressure sensitive adhesive composition include biomedical articles, such as biomedical electrodes, medical skin coverings, and pharmaceutical delivery devices, and industrial articles, such as zinc/adhesive tapes used for cathodic protection of rebars embedded in concrete.
    Type: Grant
    Filed: December 6, 1995
    Date of Patent: October 7, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Timothy M. Dietz, Ying-Yuh Lu, Rosa Uy, Chung I. Young
  • Patent number: 5670557
    Abstract: A polymerized microemulsion pressure sensitive adhesive composition is described. The composition has peel adhesion of at least 3 Newtons/ 100 mm as measured according to a PSTC-1 Test. The composition preferably has a bicontinuous structure of a continuous phase of a hydrophobic pressure sensitive adhesive polymer and a continuous phase of a hydrophilic polymer. The bulk properties of both polymers are retained in the bicontinuous structure. The composition is prepared from a microemulsion comprising a free-radically ethylenically unsaturated polar amphiphilic or hydrophilic monomer or oligomer in the aqueous phase, a free-radically ethylenically unsaturated hydrophobic monomer, having a glass transition temperature suitable for forming a pressure sensitive adhesive, in the oil phase, water, and surfactant.
    Type: Grant
    Filed: July 25, 1995
    Date of Patent: September 23, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Timothy M. Dietz, Ying-Yuh Lu, Rosa Uy, Chung I. Young
  • Patent number: 5624747
    Abstract: A water-based toner-receptive composition suitable for electrophotographic or xerographic imaging, comprising:a) from about 65 to about 99 parts of a transparent film-forming core/shell latex polymer, wherein the ratio of core to shell of said core/shell latex polymer ranges from about 10/90 to about 90/10, with the core having a lower T.sub.g than the shell;b) from about 1 to about 15 parts polymeric particles; andc) from 0 to about 20 parts of an antistatic agent selected from the group consisting of cationic agents, anionic agents, fluorinated agents, and nonionic agents.
    Type: Grant
    Filed: October 10, 1995
    Date of Patent: April 29, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Manisha Sarkar, Ying-Yuh Lu
  • Patent number: 5624973
    Abstract: A polymer composite is described having a bicontinuous structure of two substantially nonporous phases, one being a hydrophilic polymer and the other being a hydrophobic polymer. The bulk properties of both polymers are retained in the polymer composite. The composite is prepared from a microemulsion comprising a free-radically ethylenically unsaturated polar species in the aqueous phase, a free-radically ethylenically unsaturated hydrophobic monomer in the oil phase, and surfactant.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: April 29, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Ying-Yuh Lu, Chung I. Young
  • Patent number: 5521229
    Abstract: A polymer composite is described having a bicontinuous structure of two substantially nonporous phases, one being a hydrophilic polymer and the other being a hydrophobic polymer. The bulk properties of both polymers are retained in the polymer composite. The composite is prepared from a microemulsion comprising a free-radically ethylenically unsaturated polar species in the aqueous phase, a free-radically ethylenically unsaturated hydrophobic monomer in the oil phase, and surfactant.
    Type: Grant
    Filed: June 27, 1995
    Date of Patent: May 28, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Ying-Yuh Lu, Chung I. Young
  • Patent number: 5514122
    Abstract: A feminine hygiene pad is provided with a linerless microsphere pressure-sensitive adhesive attachment region for attaching the pad to an undergarment. The pads are stackable without release liners and can be used as a tape to form the liquid barrier backing of the pad.
    Type: Grant
    Filed: May 16, 1994
    Date of Patent: May 7, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Terry L. Morris, Ying-Yuh Lu, Michele M. Parker, Joaquin Delgado
  • Patent number: 5500457
    Abstract: A water-based toner-receptive composition suitable for electrophotographic or xerographic imaging, comprising:a) from about 65 to about 99 parts of a transparent film-forming core/shell latex polymer, wherein the ratio of core to shell of said core/shell latex polymer ranges from about 10/90 to about 90/10, with the core having a lower T.sub.g than the shell;b) from about 1 to about 15 parts polymeric particles; andc) from 0 to about 20 parts of an antistatic agent selected from the group consisting of cationic agents, anionic agents, fluorinated agents, and nonionic agents.
    Type: Grant
    Filed: November 18, 1994
    Date of Patent: March 19, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Manisha Sarkar, Ying-Yuh Lu
  • Patent number: 5464916
    Abstract: The invention relates to pressure-sensitive adhesive (PSA) structured bead, which has a distinct morphology, which is comprised of a copolymer which is characterized as aa two-phase system wherein more rigid, thermoplastic segments (hydrophilic segments formed from the polymerization of water soluble monomer in the water-in-oil emulsion particles) provide discrete reinforcing micro-domains within a predominating continuous matrix formed by rubbery, viscoelastic polymer segments (formed from the polymerization of the ester and the polar monomer). The invention also relates to a method of making the beads via a polymerization of a water-in-oil emulsion in a water suspension.
    Type: Grant
    Filed: December 15, 1994
    Date of Patent: November 7, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Chung I. Young, Ying-Yuh Lu
  • Patent number: 5461125
    Abstract: The present invention provides:A core-shell insert latex composition comprising latex particles, each latex particle comprising:(a) a core comprising a (co)polymer comprising (meth)acrylate ester;(b) a shell, surrounding the core, comprising a copolymer, wherein the copolymer comprises:(i) a nitrogen-bearing ethylenically-unsaturated free-radically polymerizable monomer;(ii) at least one (meth)acrylate ester of about a C.sub.1 to about a C.sub.14 alcohol; and(iii) an optional ethylenically-unsaturated free-radically polymerizable silane monomer; wherein the nitrogen-bearing ethylenically-unsaturated free-radically polymerizable monomer comprises from about 15 to about 60 percent by weight of the shell and further wherein the core comprises from about 40 to about 85 percent of the weight of the total core-shell latex particle.The invention also relates to the use of the core-shell latex composition as a binder or primer for coatings and adhesives.
    Type: Grant
    Filed: April 30, 1993
    Date of Patent: October 24, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Ying-Yuh Lu, Chi-Ming Tseng, James E. Bunker, Terrence E. Cooprider, Ronald W. Most, Gregory J. Stanich
  • Patent number: 5374698
    Abstract: The invention relates to pressure-sensitive adhesive (PSA) structured bead, which has a distinct morphology, which is comprised of a copolymer which is characterized as a two-phase system wherein more rigid, thermoplastic segments (hydrophilic segments formed from the polymerization of water soluble monomer in the water-in-oil emulsion particles) provide discrete reinforcing micro-domains within a predominating continuous matrix formed by rubbery, viscoelastic polymer segments (formed from the polymerization of the ester and the polar monomer). The invention also relates to a method of making the beads via a polymerization of a water-in-oil emulsion in a water suspension.
    Type: Grant
    Filed: November 25, 1992
    Date of Patent: December 20, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Chung I. Young, Ying-Yuh Lu
  • Patent number: 5310595
    Abstract: An image recording sheet and a transparent water-based toner receptive coating therefore comprising an imaging copolymer formed from at least one monomer selected from the group consisting of bicyclic alkyl (meth) acrylates, aliphatic alkyl (meth)acrylates having from about one to about 12 carbon atoms, aromatic (meth)acrylates, and a polar monomer having the formula: ##STR1## wherein R is hydrogen or methyl, R.sub.1 and R2 may be hydrogen, identical or differing alkyl groups having up to about 8 carbon atoms, preferably up to about 2 carbon atoms, or the quaternary cationic salts thereof, at least one novel long chain polymeric particle having good antifriction characteristics and optionally, an antistatic agent selected from the group consisting of cationic agents, anionic agents, fluorinated agents, and nonionic agents.
    Type: Grant
    Filed: September 18, 1992
    Date of Patent: May 10, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Mahfuza B. Ali, Bill H. Dodge, William H. Hughes, Mohammed Iqbal, Ying-Yuh Lu, Steven J. McMan, Manisha Sarkar, Chi-Ming Tseng