Patents by Inventor James C. Davis

James C. Davis 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: 20010007746
    Abstract: A medium for storage and subsequent analysis of a genetic material includes a support for immobilizing the genetic material thereon and allowing subsequent elution of the genetic material therefrom and a coating functionally associated with the support for enabling cellular lysis and releasing the genetic material from the lysed cells while stabilizing the immobilized released genetic material.
    Type: Application
    Filed: September 18, 1999
    Publication date: July 12, 2001
    Inventors: MARTIN A. SMITH, MRIDULA IYER, DAQING QU, JAMES C. DAVIS
  • Publication number: 20010000149
    Abstract: A medium for storage and subsequent analysis of a genetic material includes a support for immobilizing the genetic material thereon and allowing subsequent elution of the genetic material therefrom and a coating functionally associated with the support for enabling cellular lysis and releasing the genetic material from the lysed cells while stabilizing the immobilized released genetic material.
    Type: Application
    Filed: November 30, 2000
    Publication date: April 5, 2001
    Inventors: Martin A. Smith, Mridula Iyer, Daqing Qu, James C. Davis
  • Patent number: 6158941
    Abstract: A substrate processing apparatus having a supply of substrates, a substrate transport module, and a substrate processing module. The transport module has a movable arm assembly and two substrate holders mounted to the movable arm assembly. The substrate holders each have two separate holding areas for simultaneously holding two substrates. The movable arm assembly has two pairs of driven arms. Each pair of driven arms is connected to a separate one of the holders for extending and retracting the holders along a radial path relative to a center of the movable arm assembly.
    Type: Grant
    Filed: January 12, 1999
    Date of Patent: December 12, 2000
    Assignee: Brooks Automation, Inc.
    Inventors: Richard S. Muka, James C. Davis, Jr., Christopher A. Hofmeister
  • Patent number: 6083297
    Abstract: The invention relates to a gas dehydration membrane comprising a membrane having pores communicating between a first and an opposing second surface of the membrane and further having an average pore diameter on the first surface of the membrane which is about 10 to 1000 times smaller than that on the opposing second surface of the membrane. The invention further relates to a process for dehydrating a gaseous feedstock comprising passing the gaseous feedstock over a membrane characterized by high surface porosity wherein pore openings on a first surface thereof are at least 10 to 1000 times smaller than pore openings on an opposing surface thereof and wherein from about 2% to about 30% of the pore volume is occupied by a humectant.
    Type: Grant
    Filed: September 24, 1997
    Date of Patent: July 4, 2000
    Assignee: Whatman, Inc.
    Inventors: Ronald J. Valus, Randall W. Nichols, James C. Davis
  • Patent number: 5853884
    Abstract: A method for forming a hollow fiber bundle unit for insertion into an assisted breathing device comprising spinning a hollow fiber or hollow fibers, collecting multiple fibers into a bundle, filling the walls of the hollow fibers within the hollow fiber bundle with an humectant, coating the hollow fibers containing the humectant with a solution of an adhesive material, forming and drying the hollow fiber bundle coated with the solution, and preparing the hollow fiber bundle coated with the solution for insertion into the assisted breathing device.
    Type: Grant
    Filed: March 26, 1997
    Date of Patent: December 29, 1998
    Assignee: Whatman, Inc.
    Inventors: Randall W. Nichols, James C. Davis
  • Patent number: 5647724
    Abstract: A substrate transport apparatus having a movable arm assembly, two substrate holders and a coaxial drive shaft assembly. The movable arm assembly has a general X-shaped section that has its center connected to the coaxial drive shaft assembly. The substrate holders are connected to different pairs of arm sections of the X-shaped section. The coaxial drive shaft assembly moves the arms of the X-shaped section relative to each other to move the two substrate holders in reverse unison motion between extended and retracted positions.
    Type: Grant
    Filed: October 27, 1995
    Date of Patent: July 15, 1997
    Assignee: Brooks Automation Inc.
    Inventors: James C. Davis, Jr., Christopher A. Hofmeister
  • Patent number: 5577879
    Abstract: An articulated arm transfer device having a pair of upper arms and a pair of forearms. Each upper arm is rotatable at its shoulder end. Each forearm is rotatable at its wrist end. The elbow ends of the upper arms and the forearms are connected to each other by a link. The shoulder ends are mounted on a support in such a manner that one upper arm is rotated by a drive, and a holder for an object to be transferred is mounted on the wrist ends. The link includes shafts upon which the elbow ends are mounted. At least two S-bands connect the shafts in such a manner that rotation of one shaft in either direction causes rotation of the other shaft in the opposite direction. The elbow end of one upper arm is fixed to its shaft, while the elbow end of the other upper arm is rotatably mounted on its shaft.
    Type: Grant
    Filed: April 13, 1995
    Date of Patent: November 26, 1996
    Assignee: Brooks Automation, Inc.
    Inventors: Richard H. Eastman, James C. Davis, Jr.
  • Patent number: 5539323
    Abstract: The presence of an article at a specified location is detected by measuring a change in capacitance which is caused by the placement of the article at the specified location. The device used for this measurement includes an oscillator the frequency whereof is rendered highly sensitive to the capacitance being measured by structure which includes a triaxial cable and by electrical circuitry which includes a voltage follower circuit.
    Type: Grant
    Filed: May 7, 1993
    Date of Patent: July 23, 1996
    Assignee: Brooks Automation, Inc.
    Inventor: James C. Davis, Jr.
  • Patent number: 5431529
    Abstract: An articulated arm transfer device employs a pair of upper arms each upper arm being rotatable at its shoulder end, and a pair of forearms each forearm being rotatable at its wrist end. The elbow ends of each pair are connected to each other by a link means. The shoulder ends are mounted on a support in such a manner that one upper arm is rotated by a drive means, and holding means for an object to be transferred is mounted on the wrist ends. The link means includes shafts upon which the elbow ends are mounted and at least two S-bands connecting the shafts in such a manner that rotation of one shaft in either direction causes rotation of the other shaft in the opposite direction. The elbow end of one upper arm is fixed to its shaft, while the elbow end of the other upper arm is rotatably mounted on its shaft.
    Type: Grant
    Filed: December 28, 1992
    Date of Patent: July 11, 1995
    Assignee: Brooks Automation, Inc.
    Inventors: Richard H. Eastman, James C. Davis, Jr.
  • Patent number: 5174900
    Abstract: A method for the treatment of fluid feedstreams comprises the steps of providing at least one wafer (200) comprising a central area (202) providing a plurality of members (18) arranged in a plurality of layers (201) and peripheral support means (203) encompassing the central area, arranged axially in a module (180) having first and second ports (185, 208); a plurality of separate bore fluid chambers (198, 199) generally encompassing the peripheral support means and communicable with the members within the central area, and a plurality of separate bore fluid ports (192, 193) communicable with the bore fluid chambers; directing the feedstream through the first port and over the wafer; and transferring materials between the central area in the wafer and the feedstream. Related methods employ other multi port apparatus (220, 240) as well as wafers (240, 280, 300, 320, 350, 410, 460) for use therein.
    Type: Grant
    Filed: September 25, 1990
    Date of Patent: December 29, 1992
    Assignee: The Standard Oil Company
    Inventors: Randall W. Nichols, James C. Davis, Robert D. Littler
  • Patent number: 5164081
    Abstract: A multi port apparatus (220,440) provides for the treatment of material.
    Type: Grant
    Filed: September 25, 1990
    Date of Patent: November 17, 1992
    Assignee: The Standard Oil Company
    Inventors: Randall W. Nichols, James C. Davis, Robert D. Littler
  • Patent number: 5131928
    Abstract: The subject invention relates to a membrane for the selective separation of at least one component of a gaseous feed stream comprising a porous membrane, having pores of from about 10 Angstroms to about 200 Angstroms, the pores containing a facilitator liquid having an affinity for the at least one component to be selectively separated, the membrane being capable of operating at a transmembrane pressure of about 100 psig to about 1000 psig, and the membrane comprising a polymer, a solvent, an alcohol non-solvent, and a viscosity enhancer and pore former.
    Type: Grant
    Filed: March 11, 1991
    Date of Patent: July 21, 1992
    Assignee: The Standard Oil Company
    Inventors: Marc W. Blackman, Alex E. Velikoff, James C. Davis, Ronald J. Valus
  • Patent number: 5120019
    Abstract: Valve mechanism for high-vacuum clean environments, wherein a slot aperture is closed by a gage having a lever. Motion of the gate which covers and uncovers the slot is imparted to the gate by longitudinal movement of the lever. Motion of the gate which seals and unseals the slot is imparted by pivoting movement of the level about a fulcrum near the center of the lever. The pivoting movement is imparted at a time different from that at which the longitudinal movement is imparted, and the pivoting movement may be imparted by means separate from that which imparts the longitudinal movement.
    Type: Grant
    Filed: May 16, 1991
    Date of Patent: June 9, 1992
    Assignee: Brooks Automation, Inc.
    Inventor: James C. Davis, Jr.
  • Patent number: 5057641
    Abstract: The subject invention relates to a process for the selective separation of at least one component of a gaseous feedstream comprising passing the feedstream containing the component through a separation unit, the separation unit containing a porous membrane having a feed side and a permeate side, and a pore size of from about 10 Angstroms to about 200 Angstroms, and having disposed in the pores of the porous membrane a facilitator liquid comprising a carrier dissolved in a suitable solvent, including:a) dissolving the component in the facilitator liquid on the feed side of the porous membrane at the feed gas/membrane interface;b) forming a component-carrier complex;c) diffusing the complex to the permeate side of the porous membrane; andd) releasing the component from the carrier.
    Type: Grant
    Filed: April 9, 1990
    Date of Patent: October 15, 1991
    Assignee: The Standard Oil Company
    Inventors: Ronald J. Valus, Reza Eshraghi, Alexander E. Velikoff, James C. Davis
  • Patent number: 5048215
    Abstract: An optional removable front grip usable with any firearm having a barrel shroud formed with a row of regularly spaced openings on its underside. Such openings are routinely provided to ventilate the barrel. The invention front grip is hollow and is provided with a set of lugs which engage any three adjacent barrel shroud ventilation openings to thereby accommodate shooters having different arm lengths. One of the lugs is a locking lug which is operated easily by a screwdriver inserted through the hollow grip.
    Type: Grant
    Filed: August 30, 1990
    Date of Patent: September 17, 1991
    Assignee: Calico Light Weapon Systems
    Inventor: James C. Davis
  • Patent number: 5006256
    Abstract: A process for selectively removing biological materials from fluids includes the step of passing the fluids over an affinity membrane which comprises a precursor filtration membrane and a plurality of reaction sites provided on the surface of the membrane selective to binding a specific biological material.
    Type: Grant
    Filed: August 10, 1990
    Date of Patent: April 9, 1991
    Assignee: The Standard Oil Company
    Inventor: James C. Davis
  • Patent number: 5006287
    Abstract: Polymeric affinity membranes comprise a precursor filtration membrane and a plurality of reaction sites provided on the surface of the membrane selective to binding a specific biological material. A process for the preparation of such affinity membranes includes the steps of providing a copolymer compatible with a water insoluble polymer matrix and having a plurality of hydroxyl groups, activating the hydroxyl groups with a compound selected from the group consisting of organic compounds reactive with a hydroxyl group in the presence of a water miscible solvent to provide a derivatized copolymer containing active adducts, forming a solution of the derivatized copolymer and the polymer matrix to form a polymer blend solution, casting the polymer blend solution and, quenching the cast polymer blend solution in water.
    Type: Grant
    Filed: February 12, 1990
    Date of Patent: April 9, 1991
    Assignee: The Standard Oil Company
    Inventor: James C. Davis
  • Patent number: 4963264
    Abstract: A process for the selective dialysis of liquid streams containing different materials comprises the steps of providing a porous membrane in a cell, the membrane having pores of sufficient dimension to allow passage of the different materials therethrough, circulating an affinity adsorbent stream against a first side of the membrane, where the adsorbent has a dimension larger than that of the pores and has a binding capacity for at least one but not all of the different materials and, passing the liquid stream containing the different materials against a second side of the membrane whereby certain of the materials become bound to the adsorbent upon passing through the membrane to the first side thereof and become separated from others of the materials which can return to the second side of the membrane. A separate stripping process is also provided which can be employed in conjunction with the dialysis process or alone where it is desirable to remove bound materials from an affinity adsorbent material.
    Type: Grant
    Filed: June 10, 1985
    Date of Patent: October 16, 1990
    Assignee: The Standard Oil Company
    Inventor: James C. Davis
  • Patent number: 4919811
    Abstract: Polymeric affinity membranes comprise a precursor filtration membrane and a plurality of reaction sites provided on the surface of the membrane selective to binding a specific biological material. A process for the preparation of such affinity membranes includes the steps of providing a copolymer compatible with a water insoluble polymer matrix and having a plurality of hydroxyl groups, activating the hydroxyl groups and a compound selected from the group consisting of organic compounds reactive with a hydroxyl group in the presence of water miscible solvent to provide a derivatized copolymer containing active adducts, forming a solution of the derivatized copolymer and the polymer matrix to form a polymer blend solution, casting the polymer blend solution and, quenching the cast polymer blend solution in water.
    Type: Grant
    Filed: January 14, 1988
    Date of Patent: April 24, 1990
    Assignee: The Standard Oil Company
    Inventor: James C. Davis
  • Patent number: 4909701
    Abstract: In a material transfer device, an articulated arm assembly extends and retracts in a "froglike" motion to transfer an object between a plurality of locations. The articulated arm assembly is rotatable about a pivot point in a radial plane and can be raised or lowered in an axial direction to align the object with the intended destination. A greater degree of axial mobility may be provided, for example by a rotating lift screw. A vacuum chamber may be provided, with the arm assembly moving the object between locations in the chamber.
    Type: Grant
    Filed: May 18, 1987
    Date of Patent: March 20, 1990
    Assignee: Brooks Automation Inc.
    Inventors: E. Brian Hardegen, Todd E. Bottomley, James C. Davis, Jr.