Patents Represented by Attorney Philip Subkow
  • Patent number: 4196101
    Abstract: Shaped alumina pellets containing titania, catalysts employing the same, and process for producing the same.
    Type: Grant
    Filed: February 3, 1978
    Date of Patent: April 1, 1980
    Assignee: Filtrol Corporation
    Inventors: Geoffrey R. Wilson, Masami Kayamoto
  • Patent number: 4192778
    Abstract: A rare earth exchanged zeolite of the faujasite type in which the equivalent of Na is less than 0.1 and the rare earth is at least 0.9 equivalents per gram atom of aluminum and catalysts including the same.
    Type: Grant
    Filed: January 16, 1978
    Date of Patent: March 11, 1980
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires
  • Patent number: 4164483
    Abstract: This invention relates to the preparation of rare earth exchanged X type faujasite zeolites in which the Na content is reduced by exchange with rare earth cations to introduce in excess of about 0.9 equivalents of rare earth cations per gram atom of aluminum and catalysts employing the same.
    Type: Grant
    Filed: June 20, 1977
    Date of Patent: August 14, 1979
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires
  • Patent number: 4142994
    Abstract: A mechanically strong, thermally stable porous siliceous particle having a high pore volume and surface area with a major portion of the pore volume in pores of radii more than 20 Angstroms and the process of producing the particles by shaping a clay, acid-leached to a degree insufficient to destroy the plasticity of the clay, forming the leached clay into shaped particles, calcining the particles and further extracting the calcined clay particles without impairing their shape.
    Type: Grant
    Filed: August 22, 1977
    Date of Patent: March 6, 1979
    Assignee: Filtrol Corporation
    Inventor: Hamid Alafandi
  • Patent number: 4142995
    Abstract: This invention relates to zeolitic catalysts composed of an exchanged zeolite of the faujasite type and a matrix composed of alumina and an alumina-silica component.
    Type: Grant
    Filed: February 16, 1977
    Date of Patent: March 6, 1979
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires
  • Patent number: 4133516
    Abstract: A shock absorber assembly has an outer body connectible at one end in a well drill string and an inner body connectible at one end in the well drilling string, with the bodies telescopically coengaged. Between the bodies is an annular space, filled with hydraulic fluid and containing a pressure equalizing annular piston. Stacked sets of dished-spring washers are disposed in coengaged frictional relation to form parallel-acting columns in the annular space between the two bodies. The equalizing piston is exposed to the pressure of drilling fluid inside the inner body, in one form, and outside the outer body, in another form. Another equalizing piston defines between the bodies a fluid filled chamber containing torque transmitting means for causing the bodies to rotate as a unit during drilling operations while allowing telescopic extension and retraction of the bodies. Telescoping of the bodies causes fluid transfer through restricted passages to dampen the telescopic motion.
    Type: Grant
    Filed: July 29, 1977
    Date of Patent: January 9, 1979
    Assignee: Christensen, Inc.
    Inventor: Rainer Jurgens
  • Patent number: 4133557
    Abstract: A misalignment conductor for large pipelines or conductor pipes includes an internal, metal seal ring having an external spherical surface which is axially and circumferentially loaded between opposed internal spherical metal surfaces of connector hubs. Connector body parts engaged with or formed on the pipe connector ends or hubs have spherical surfaces enabling the connector to be made up with the pipe connector hubs disposed over a range of angular misalignment. The sealing ring is preloaded by a loading tool when the connector body parts are secured together to prevent relaxation of the preload on the sealing ring. The metal sealing ring is initially supported on one of the hubs by means enabling angular adjustment of the sealing ring as it is loaded between misaligned hubs.
    Type: Grant
    Filed: August 12, 1977
    Date of Patent: January 9, 1979
    Assignee: Vetco, Inc.
    Inventor: Arthur G. Ahlstone
  • Patent number: 4133558
    Abstract: A misalignment connector for large pipelines includes an internal, metal seal ring having an external spherical surface which is axially and circumferentially loaded between opposed internal spherical metal surfaces of pipe connector hubs having parts engaged with holding means having spherical surfaces enabling the connector to be made up with the pipe connector hubs disposed over a range of angular misalignment and with the sealing ring loaded axially and inwardly when the connector body parts are secured together by the holding means to prevent relaxation of the preload on the sealing ring. The metal sealing ring is initially supported on one of the hubs by means enabling relative angular motion of the sealing ring as it is loaded between misaligned hubs. The hubs are provided with thrust surfaces enabling them to be initially preloaded against the sealing ring by a loading tool.
    Type: Grant
    Filed: August 12, 1977
    Date of Patent: January 9, 1979
    Assignee: Vetco, Inc.
    Inventor: Arthur G. Ahlstone
  • Patent number: 4133418
    Abstract: A through the flowline or "TFL" tool selector has a base provided with a number of spaced flowline ports and a diverter tube shiftably mounted in a housing for selective communication with the flowline ports. The diverter tube is actuated by a reciprocable and rotatable piston and cam drive which shifts the diverter tube progressively from one flowline port to another. The piston is shiftable in a cylinder to which pressure fluid is supplied and then exhausted to effect actuation of the cam drive.
    Type: Grant
    Filed: July 8, 1977
    Date of Patent: January 9, 1979
    Assignee: Vetco, Inc.
    Inventor: Bernard H. Van Bilderbeek
  • Patent number: 4133396
    Abstract: Casing is run into a well bore hole on a running pipe string. Fluid motor and drill apparatus is supported in the casing, with the drill extending below the lower end of the casing to drill the bore hole in advance of the casing. For subsea drilling operations, the casing is suspended from a riser housing which lands on a subsea base, and the running pipe is released from the riser housing to enable retrieval of the motor and drill assembly. Plural motors are employed for drilling large holes.
    Type: Grant
    Filed: November 4, 1977
    Date of Patent: January 9, 1979
    Assignee: Smith International, Inc.
    Inventor: John E. Tschirky
  • Patent number: 4133397
    Abstract: A multiple in-hole motor and drill combination is disclosed for drilling a large diameter earth bore. The motor assembly is supported on a fluid circulating pipestring, and includes a plurality of circumferentially spaced longitudinally extended in-hole motor and drill combinations to which motor fluid is supplied through the running in pipestring, the motor fluid then passing through the rotary drill bit driven by the motor and returning to the top of the well. The plural in-hole motor drill assemblies are rotated during the drilling operation. A hydraulic drive motor powered by a separate fluid source is employed to rotate a housing to drive the multiple motor drill assemblies rotatably about the central support. The lower end of the multiple motor drill assembly supports a number of weights to apply drilling weight to the bits.
    Type: Grant
    Filed: September 19, 1977
    Date of Patent: January 9, 1979
    Assignee: Smith International, Inc.
    Inventor: John E. Tschirky
  • Patent number: 4058484
    Abstract: A process of producing an ammonium zeolite of the faujasite type in which a zeolite of the faujasite type whose exchange sites are substantially entirely occupied by Na cations, is treated with an ammonium salt solution to exchange substantially all of the Na cations with NH.sub.4 cations with substantially no impairment of crystallinity by a control of the relation of the equivalents of NH.sub.4 in the solution to equivalents of Na in the zeolite.
    Type: Grant
    Filed: September 9, 1976
    Date of Patent: November 15, 1977
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires
  • Patent number: 4057267
    Abstract: Pipe connectors particularly useful in securing sections of an underwater marine riser together, including a pin received in a box which are secured to one another by a plurality of lock dogs mounted in the box and movable radially inwardly against a portion of the pin by fluid actuated pistons to force the pin and box firmly together, the dogs being retained in position by fluid operated lock pistons. The lock pistons are operated by fluid pressure to shift them to an unlocking position, the fluid actuated pistons being operated by fluid pressure to shift the dogs outwardly and disconnect the pin and box from each other.
    Type: Grant
    Filed: February 17, 1976
    Date of Patent: November 8, 1977
    Assignee: Vetco Offshore Industries, Inc.
    Inventor: Martin B. Jansen, Jr.
  • Patent number: 4018714
    Abstract: A shaped hydrodesulfurization catalyst comprising a nonzeolitic substrate impregnated with a Group VI and a Group VIII catalytic metal and with a Group IV-B promoter and having a high resistance to abrasion and a process of producing the same employing a substantially nonacid Group IV-B metal compound as the source of the Group IV-B promoter.
    Type: Grant
    Filed: December 3, 1975
    Date of Patent: April 19, 1977
    Assignee: Filtrol Corporation
    Inventors: Geoffrey R. Wilson, Masami Kayamoto
  • Patent number: 4010116
    Abstract: This invention relates to a high-activity catalyst of improved thermal stability employing a zeolite of the faujasite type, pseudoboehmite alumina gel and a synthetic mica-montmorillonite and may also include a clay.
    Type: Grant
    Filed: October 15, 1974
    Date of Patent: March 1, 1977
    Assignee: Filtrol Corporation
    Inventors: Robert B. Secor, Robert A. Van Nordstrand, David R. Pegg
  • Patent number: 3989114
    Abstract: This invention relates to circulation subs used in connection with hydraulic in-hole motors with means for selectively interrupting circulation through the circulation sub.
    Type: Grant
    Filed: March 17, 1975
    Date of Patent: November 2, 1976
    Assignee: Smith International, Inc.
    Inventors: John E. Tschirky, Gary M. Crase
  • Patent number: 3982797
    Abstract: This invention relates to spring-loaded thrust bearings for shafts subject to a plurality of levels of thrust loads and in its preferred embodiment is applied to in-hole motors. The invention employs a plurality of spring systems, whereby the thrust load on one set of springs is limited to one level of thrust and another of the spring systems under said load may be loaded to a higher level.
    Type: Grant
    Filed: July 11, 1975
    Date of Patent: September 28, 1976
    Assignee: Smith International Corporation, Inc.
    Inventors: John E. Tschirky, Bela A. Geczy
  • Patent number: 3982858
    Abstract: This invention relates to progressing cavity fluid motors with multiple segmented stator elements connected in series to provide a fluid passageway from the input of the initial stator of the series to the output of the terminal stator of the series; the rotor elements in each stator are connected together for simultaneous rotation.
    Type: Grant
    Filed: July 11, 1975
    Date of Patent: September 28, 1976
    Assignee: Smith International Corporation, Inc.
    Inventor: John E. Tschirky
  • Patent number: 3982859
    Abstract: This invention relates to flow restrictors in fluid motors.
    Type: Grant
    Filed: July 11, 1975
    Date of Patent: September 28, 1976
    Assignee: Smith International Corporation, Inc.
    Inventors: John E. Tschirky, Bela A. Geczy
  • Patent number: 3936247
    Abstract: This invention relates to flow restrictors in fluid motors where the operating fluid also passes through the bearings of the motor.
    Type: Grant
    Filed: January 27, 1975
    Date of Patent: February 3, 1976
    Assignee: Smith International, Inc.
    Inventors: John E. Tschirky, Gary Monroe Crase