Patents by Inventor Geoffrey Chan

Geoffrey 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).

  • Publication number: 20090044357
    Abstract: A toothbrush has a handle and a head attached to the handle. The head has a top face and a bottom face, wherein the top face comprises a plurality of cleaning members and the bottom face comprises an elastomeric surface. The elastomeric surface forms a hill and wherein the hill comprises a plurality of protrusions.
    Type: Application
    Filed: August 16, 2007
    Publication date: February 19, 2009
    Inventors: John Geoffrey Chan, Douglas A. Gall
  • Publication number: 20090025162
    Abstract: A toothbrush has a body, a brush head, and a neck extending between the body and the brush head. The toothbrush also has a massaging element, a plurality of bristles, and a plurality of massaging tips. The brush head has a front face and a rear face. The massaging element is disposed on the rear face of the brush head, while the plurality of bristles and the plurality of massaging tips extend from the front face.
    Type: Application
    Filed: July 25, 2007
    Publication date: January 29, 2009
    Inventors: John Geoffrey Chan, Douglas A. Gall
  • Publication number: 20090000632
    Abstract: Provided is a method for reducing TPM cytotoxicity, mutagenicity, and/or phenolic compounds and polycyclic aromatic hydrocarbons in the particulate phase of mainstream smoke. Also provided is a smoking article including tobacco material treated with a bismuth containing compound and optionally glycerin. The method includes forming a suspension of a bismuth containing compound, water, and optionally glycerin. Tobacco material is contacted with the suspension, and then dried to evaporate the water. The tobacco material is used to form smoking articles with potentially reduced TPM cytotoxicity, mutagenicity, and/or targeted constituents in mainstream smoke.
    Type: Application
    Filed: May 30, 2008
    Publication date: January 1, 2009
    Applicant: Philip Morris USA Inc.
    Inventors: Lixin Xue, W. Geoffrey Chan
  • Publication number: 20090000631
    Abstract: Provided is a smoking article and method for reducing TPM cytotoxicity and targeted constituents in mainstream smoke. The smoking article includes tobacco material including a salt of a lanthanide metal. The method includes combining a salt of a lanthanide metal, water, and optionally glycerin to produce a solution that is applied to tobacco material. Preferably, the salt is an acetate, a sulfate, or a gluconate.
    Type: Application
    Filed: May 15, 2008
    Publication date: January 1, 2009
    Applicant: Philip Morris USA Inc.
    Inventors: Lixin Xue, W. Geoffrey Chan
  • Publication number: 20080301890
    Abstract: An electric toothbrush having a handle, a head, and a neck extending between the handle and the head is disclosed. The handle has a hollow interior region having a motor and an electrical power source. The head includes an ultrasonic transducer and a bristle field. The ultrasonic transducer is in electrical communication with the electrical power source, and a shaft is operatively connected to the motor for moving the bristle field.
    Type: Application
    Filed: August 14, 2008
    Publication date: December 11, 2008
    Inventors: John Geoffrey Chan, Chanchal Kumar Ghosh, Stephen Andras Kovacs, Lowen Robert Morrision, JR., Ping Wang, Aleksey Mikhailovich Pinyayev
  • Publication number: 20080271271
    Abstract: An electric toothbrush having movable and static carriers which independently slidingly engage the receiving member of the toothbrush head within channels defined by the surfaces of the receiving member. Such carriers can be releasably removable to replace or exchange the carriers. Also disclosed is a toothbrush having a unique assembly utilizing a one-piece housing in combination with a movable bristle carrier that is engaged on a receiving member located at the distal end of the toothbrush, and a static carrier such as a brush head tip which is secured thereto. The unitary housing reduces the number of components of the toothbrush and decreases manufacturing costs. The static and movable carriers may be replaced with other carriers and allows a consumer to individually tailor the brush to provide a particular brushing configuration. An electric toothbrush having a particular assembly, bristle configuration, and drive mechanism is disclosed.
    Type: Application
    Filed: March 25, 2008
    Publication date: November 6, 2008
    Inventor: John Geoffrey Chan
  • Patent number: 7421753
    Abstract: An electric toothbrush is provided. The electric toothbrush has an elongated body including a handle, a head, and a neck extending between the handle and the head. A first bristle carrier having a plurality of bristles and a second bristle carrier having a plurality of bristles are disposed on the head and each of the first and second bristle carriers have an opening. An electric motor is operatively connected to a shaft, wherein operation of the electric motor moves the shaft in an orbital motion and wherein the shaft is operatively connected to the first and second bristle carriers to move the first and second bristle carriers.
    Type: Grant
    Filed: April 25, 2006
    Date of Patent: September 9, 2008
    Assignee: The Procter and Gamble Company
    Inventors: John Geoffrey Chan, Patrick William Brown, Donald Clarence Fuchs, Jr., Douglas Alan Gall, Trevor Leslie Jackson, Jeffrey Michael Kalman, Mark Louis Vitantonio
  • Patent number: 7398575
    Abstract: An electric toothbrush is disclosed comprising a body, a head, and a neck extending therebetween. A motor, drive train, and one or more batteries impart motion to the collection of movable bristles. A spring component is provided in the drive train that is configured to absorb excessive loads that would otherwise be transmitted to the motor. Reducing or eliminating application of such excessive loads on the motor extends battery life.
    Type: Grant
    Filed: February 7, 2005
    Date of Patent: July 15, 2008
    Assignee: Church & Dwight Co., Inc.
    Inventor: John Geoffrey Chan
  • Patent number: 7356866
    Abstract: An electric toothbrush having movable and static carriers which independently slidingly engage the receiving member of the toothbrush head within channels defined by the surfaces of the receiving member. Such carriers can be releasably removable to replace or exchange the carriers. Also disclosed is a toothbrush having a unique assembly utilizing a one-piece housing in combination with a movable bristle carrier that is engaged on a receiving member located at the distal end of the toothbrush, and a static carrier such as a brush head tip which is secured thereto. The unitary housing reduces the number of components of the toothbrush and decreases manufacturing costs. The static and movable carriers may be replaced with other carriers and allows a consumer to individually tailor the brush to provide a particular brushing configuration. An electric toothbrush having a particular assembly, bristle configuration, and drive mechanism is disclosed.
    Type: Grant
    Filed: December 9, 2003
    Date of Patent: April 15, 2008
    Assignee: Church & Dwight Co., Inc.
    Inventor: John Geoffrey Chan
  • Patent number: 7322066
    Abstract: An electric toothbrush comprising a handle, a head, and a neck extending between the handle and the head. The electric toothbrush has a longitudinal axis. The handle has a hollow interior region, and has a motor disposed within the hollow region. The movable bristle holder is disposed on the head, and has a plurality of movable bristles disposed thereon. The drive shaft operatively connects the motor to the movable bristle holder to move the movable bristle holder and the bristles disposed on the movable bristle holder. The head has bristles disposed thereon. One or more bristles are disposed on a static portion of the head of the toothbrush. Movement of the drive shaft and/or the movable bristle holder results in movement of at least a portion of the one or more bristles disposed on the static portion of the toothbrush head.
    Type: Grant
    Filed: February 17, 2004
    Date of Patent: January 29, 2008
    Assignee: Church & Dwight Co., Inc.
    Inventors: Wang Ping, John Geoffrey Chan
  • Patent number: 7228583
    Abstract: An improved housing for an electric toothbrush is disclosed. The improved housing provides two symmetrically positioned gripping members which assist the user in grasping the toothbrush particularly during brushing. Each of the gripping members includes a recessed gripping region having particular dimensional characteristics. The two gripping members are symmetrically arranged on the rearward sides of the toothbrush so that the brush may be used by both left-handed and right-handed individuals. A third gripping member may also be provided along the housing of the toothbrush.
    Type: Grant
    Filed: September 10, 2003
    Date of Patent: June 12, 2007
    Assignee: Church & Dwight Co., Inc.
    Inventors: John Geoffrey Chan, John Roy Whitney, Patrick William Brown
  • Patent number: 7225494
    Abstract: An electric toothbrush is provided. The electric toothbrush includes a handle having a motor disposed therein, a head having a longitudinal axis, and a neck disposed between the handle and the head. First and second bristle holders are associated with the head. The first bristle holder oscillates or rotates. The second bristle holder is reciprocates in generally the same direction as the longitudinal axis of the head but does not rotate or oscillate. The motor is operatively connected to the first and second bristle holders.
    Type: Grant
    Filed: July 30, 2002
    Date of Patent: June 5, 2007
    Assignee: Church & Dwight Co., Inc.
    Inventors: John Geoffrey Chan, Wang Ping, Lawrence A. Blaustein, Douglas A. Gall, Patrick W. Brown
  • Patent number: 6988292
    Abstract: Disclosed is a brush having a one-piece body comprised of a handle and at one end thereof a head provided with bristles, wherein the brush body comprises a mixture of first polymer and a second polymer that is of a lesser hardness than the first polymer, wherein the ratio of the first polymer to the second polymer is from about 95:5 to about 30:70.
    Type: Grant
    Filed: October 20, 1999
    Date of Patent: January 24, 2006
    Assignee: The Procter & Gamble Company
    Inventors: Ping Wang, John Geoffrey Chan, XiaoDan Xu
  • Patent number: 6948209
    Abstract: An electric toothbrush is disclosed having a flexible neck. Particular degrees of lateral, rearward, and forward flexibility of a brush head with respect to the handle of the toothbrush are achieved by utilizing polymer blends.
    Type: Grant
    Filed: September 10, 2003
    Date of Patent: September 27, 2005
    Assignee: The Procter & Gamble Company
    Inventor: John Geoffrey Chan
  • Patent number: 6877638
    Abstract: Disclosed is a multi-chambered tube for containing and dispensing a contents, comprising: (a) a body divided by at least one divider wall into at least two chambers, each chamber housing a portion of the contents, the body being sealed at one end by a crimp seal and one end of the divider wall being sealed within the crimp seal; (b) a shoulder attached to the body; (c) a nozzle attached to the shoulder and provided with an orifice through which the contents are dispensed; (d) a flow regulating element located in the shoulder of the tube and being comprised of as many sections as there are body chambers, and each section being provided with at least one aperture; (e) at least one partition separating the sections of the flow regulating element from each other and dividing the nozzle into as many nozzle chambers as there are body chambers, each nozzle chamber being in communication with a body chamber via the aperture(s) in the corresponding section of the flow regulating element.
    Type: Grant
    Filed: January 15, 2003
    Date of Patent: April 12, 2005
    Assignee: The Procter & Gamble Company
    Inventors: John Geoffrey Chan, Li Li
  • Patent number: D515318
    Type: Grant
    Filed: November 4, 2003
    Date of Patent: February 21, 2006
    Assignee: The Procter & Gamble Company
    Inventors: John Geoffrey Chan, Wang Ping
  • Patent number: D536876
    Type: Grant
    Filed: February 3, 2003
    Date of Patent: February 20, 2007
    Assignee: Church & Dwight Co., Inc.
    Inventors: John Geoffrey Chan, Wang Ping
  • Patent number: D558455
    Type: Grant
    Filed: November 5, 2003
    Date of Patent: January 1, 2008
    Assignee: Church & Dwight Co., Inc.
    Inventors: John Geoffrey Chan, Wang Ping
  • Patent number: D561475
    Type: Grant
    Filed: May 6, 2003
    Date of Patent: February 12, 2008
    Assignee: The Procter & Gamble Company
    Inventors: Ping Wang, John Geoffrey Chan
  • Patent number: D563106
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: March 4, 2008
    Assignee: Church & Dwight Co., Inc.
    Inventors: John Geoffrey Chan, Wang Ping