Patents by Inventor Steven D. Gray

Steven D. Gray 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: 6734134
    Abstract: A new synthesis of a Ziegler-Natta catalyst uses a multi-step preparation that includes treating a magnesium dialkoxide compound with two halogenating/titanating agents, the second stronger than the first, an organoaluminum preactivating agent, and a heat treatment. The catalyst may be used in the polymerization of olefins, particularly ethylene, to control the molecular weight distribution of the resulting polyolefins.
    Type: Grant
    Filed: October 13, 2000
    Date of Patent: May 11, 2004
    Assignee: Fina Technology, Inc.
    Inventors: Steven D. Gray, Tim J. Coffy
  • Publication number: 20040082740
    Abstract: A new synthesis of a Ziegler-Natta catalyst uses a multi-step preparation that includes treating a magnesium dialkoxide compound with halogenating/titanating agents, an organoaluminum preactivating agent, and a heat treatment. The catalyst may be used in the polymerization of olefins, particularly ethylene, to control the molecular weight distribution of the resulting polyolefins.
    Type: Application
    Filed: October 16, 2003
    Publication date: April 29, 2004
    Applicant: Fina Technology, Inc.
    Inventors: Steven D. Gray, Tim J. Coffy
  • Publication number: 20040058802
    Abstract: A process for making a polyolefin catalyst component, catalyst and polymer resin is disclosed. Controlling the viscosity of a catalyst synthesis solution with the addition of aluminum alkyl alters the precipitation of the catalyst component from a catalyst synthesis solution. The average particle size of the catalyst component increases with an increased concentration of aluminum alkyl in the synthesis solution. The catalyst component can be produced by a process comprising contacting a magnesium alkyl compound with an alcohol and an aluminum alkyl to form a magnesium dialkoxide. Catalyst components, catalysts, catalyst systems, polyolefin, products made therewith, and methods of forming each are disclosed. The reaction products can be washed with a hydrocarbon solvent to reduce titanium species [Ti] content to less than about 100 mmol/L.
    Type: Application
    Filed: September 22, 2003
    Publication date: March 25, 2004
    Inventors: David W. Knoeppel, Tim J. Coffy, Henry Enriquez, Steven D. Gray
  • Publication number: 20040058803
    Abstract: A Ziegler-Natta type catalyst component can be produced by a process comprising contacting a magnesium dialkoxide compound with a halogenating agent to form a reaction product A, and contacting reaction product A with a first, second and third halogenating/titanating agents. Catalyst components, catalysts, catalyst systems, polyolefin, products made therewith, and methods of forming each are disclosed. The reaction products can be washed with a hydrocarbon solvent to reduce titanium species [Ti] content to less than about 100 mmol/L.
    Type: Application
    Filed: September 22, 2003
    Publication date: March 25, 2004
    Inventors: David W. Knoeppel, Tim J. Coffy, Henry Enriquez, Steven D. Gray
  • Patent number: 6693058
    Abstract: A new synthesis of a Ziegler-Natta catalyst uses a multi-step preparation that includes treating a magnesium dialkoxide compound with halogenating/titanating agents, and an organoaluminum preactivating agent. The catalyst may be used in the polymerization of olefins, particularly ethylene, to control the molecular weight distribution and the fluff morphology of the resulting polyolefins.
    Type: Grant
    Filed: October 13, 2000
    Date of Patent: February 17, 2004
    Assignee: Fina Technology, Inc.
    Inventors: Steven D. Gray, Tim J. Coffy
  • Patent number: 6675012
    Abstract: Apparatus, and an associated method, for generating a message summary field. The message summary field indicates whether 802.11-formatted data packets are communicated upon a frequency range to which a mobile station operable in an IEEE 802.11 radio communication system is tuned. An indicator indicates whether an 802.11 data packet is detected. And, a reporter generates a measurement summary which includes a measurement summary field populated with a value indicating the determination. Subsequent analysis of the value of the field of the measurement summary is utilized pursuant to dynamic frequency selection operations.
    Type: Grant
    Filed: August 31, 2001
    Date of Patent: January 6, 2004
    Assignee: Nokia Mobile Phones, Ltd.
    Inventor: Steven D. Gray
  • Publication number: 20040002419
    Abstract: A process of forming a polyolefin catalyst component includes contacting a metal compound of the formula MR2 with a diketone to form a metal bis(diketonate) having the formula M(OCRCR′CRO)2, wherein M is a Group IIA or Group VIIB metal, and wherein R and R′ are each hydrocarbyls or substituted hydrocarbyls having from 1 to 20 carbons atoms. Catalyst components, catalysts, polyolefin polymers, catalysts systems, and methods of preparing same are disclosed.
    Type: Application
    Filed: June 27, 2002
    Publication date: January 1, 2004
    Inventors: Steven D. Gray, Tim J. Coffy, Edwar S. Shamshoum
  • Publication number: 20030225194
    Abstract: The present invention includes a polyolefin composition having reduced coloration with aging. The polyolefin composition comprises at least one polyolefin, an effective amount of a primary phenolic antioxidant to promote long term thermal stability of the polymer composition, and an effective amount of a phosphite processing stabilizer to promote thermal stability of the polymer composition during melt processing. The polymer composition further comprises an effective amount of a sacrificial phosphite antioxidant to reduce the yellowness index of the polymer composition. The sacrificial phosphite antioxidant and the phosphite processing stabilizer are not the same compound.
    Type: Application
    Filed: May 31, 2002
    Publication date: December 4, 2003
    Inventors: Tim J. Coffy, Steven D. Gray, Gerhard K. Guenther
  • Patent number: 6614861
    Abstract: An M-ary signal constellation within an N-dimensional space is defined, preferably such that each of the M symbols reside upon the surface of an N-dimensional sphere and such that a minimum distance between symbols is maximized. N orthogonal functions are used as the bases for representing the N-dimensional symbols for transmission. Orthogonal functions exhibiting orthogonality in frequency, time and/or space are also described for this purpose. Furthermore, conventional QAM symbol encoding may be used to represent the N-dimensional symbols, thereby facilitating the use of conventional modulation techniques. In this manner, higher dimensional modulation schemes may be realized.
    Type: Grant
    Filed: December 29, 1999
    Date of Patent: September 2, 2003
    Assignee: Nokia Networks Oy
    Inventors: John Terry, Steven D. Gray
  • Publication number: 20030030174
    Abstract: High density polyethylene (HDPE) comprising narrow rheological breadth and narrow molecular weight distribution, and methods for producing such HDPE polymer are disclosed. HDPE blown resins and films produced from the HDPE of the invention, and methods of producing such resins and films are also disclosed. The novel HDPE-derived resins of the invention possess exceptional clarity and gloss in comparison to conventional HDPE-derived resin.
    Type: Application
    Filed: June 29, 2001
    Publication date: February 13, 2003
    Inventors: Steven D. Gray, David W. Knoeppel, Tim J. Coffy, Mike Goins, Michael McLeod, Greg DeKunder
  • Publication number: 20030018143
    Abstract: A Ziegler-Natta type catalyst having an improved hydrogen response provides for narrowing of the MWD of resulting polyolefins polymerized using such catalyst, with such catalyst generally made by a) contacting a soluble magnesium dialkoxide compound of the general formula Mg(OR′)2 with a halogenating agent capable of exchanging one halogen for one alkoxide to form a reaction product A, where R′ is a hydrocarbyl or substituted hydrocarbyl having from 1 to 20 carbon atoms; b) contacting reaction product A with a first halogenating/titanating agent to form reaction product B; and c) contacting reaction product B with a second halogenating/titanating agent to form a catalyst component; wherein in at least one of steps b) and c), the halogenating/titanating agent is a blend of Ti(OPr)4 and TiCl4. Catalyst components, catalysts, catalyst sytems, polyolefin polymers, and methods of forming each are disclosed.
    Type: Application
    Filed: August 1, 2002
    Publication date: January 23, 2003
    Inventors: Steven D. Gray, Tim J. Coffy
  • Patent number: 6498785
    Abstract: A method and apparatus for power control on a first channel that is shared by multiple mobile stations transmitting to base stations in a telecommunication system. An initial mobile station transmission power level is set on the first channel that is shared in the random access mode. The transmission power level may be determined based on a desired performance level of the first channel. The method and system may be efficiently applied on a channel that carries a transmission in one or more bursts, with each burst including the same or a varying number of frames of varying sizes. The method and apparatus utilizes a second channel that is shared by multiple mobile stations for transmitting the power control signaling from the base stations to the mobile stations.
    Type: Grant
    Filed: October 2, 1998
    Date of Patent: December 24, 2002
    Assignee: Nokia Mobile Phones Ltd
    Inventors: Roy Thomas Derryberry, Steven D. Gray, Zhigang Rong
  • Patent number: 6486274
    Abstract: A Ziegler-Natta type catalyst having an improved hydrogen response provides for narrowing of the MWD of resulting polyolefins polymerized using such catalyst, with such catalyst generally made by a) contacting a soluble magnesium dialkoxide compound of the general formula Mg(OR″)2 with a halogenating agent capable of exchanging one halogen for one alkoxide to form a reaction product A, where R″ is a hydrocarbyl or substituted hydrocarbyl having from 1 to 20 carbon atoms; b) contacting reaction product A with a first halogenating/titanating agent to form reaction product B; and c) contacting reaction product B with a second halogenating/titanating agent to form a catalyst component; wherein in at least one of steps b) and c), the halogenating/titanating agent is a blend of Ti(OPr)4 and TiCl4. Catalyst components, catalysts, catalyst systems, polyolefin polymers, and methods of forming each are disclosed.
    Type: Grant
    Filed: October 13, 2000
    Date of Patent: November 26, 2002
    Assignee: Fina Technology, Inc.
    Inventors: Steven D. Gray, Tim J. Coffy
  • Publication number: 20020160769
    Abstract: Apparatus, and an associated method, for generating a message summary field. The message summary field indicates whether 802.11-formatted data packets are communicated upon a frequency range to which a mobile station operable in an IEEE 802.11 radio communication system is tuned. An indicator indicates whether an 802.11 data packet is detected. And, a reporter generates a measurement summary which includes a measurement summary field populated with a value indicating the determination. Subsequent analysis of the value of the field of the measurement summary is utilized pursuant to dynamic frequency selection operations.
    Type: Application
    Filed: August 31, 2001
    Publication date: October 31, 2002
    Inventor: Steven D. Gray
  • Patent number: 6473419
    Abstract: State apparatus, and an associated method, controls a packet data service in a radio communication system in which a mobile station is operable. Control architecture is represented by operational states in which the mobile station is caused to be operated includes a control hold power save substate and a virtual traffic substate. Subsequent to a selected period of communication inactivity, the operational state of the mobile station in caused to be transitioned into a control hold power save substate in which a dedicated control channel remains allocated to the mobile station. If packet data is subsequently to be communicated by the mobile station, the channel is readily available to the mobile station to communicate the packet data thereon. When, conversely, subsequent to a period of communication inactivity, operation of the mobile station is caused to be transitioned into the virtual traffic channel substate, a communication channel is released from its allocation to the mobile station.
    Type: Grant
    Filed: September 14, 1998
    Date of Patent: October 29, 2002
    Assignee: Nokia Corporation
    Inventors: Steven D. Gray, Mark Cheng, Janne Parantainen
  • Patent number: 6275712
    Abstract: A mobile station is transitioned between control states in a telecommunications system based on available power at the mobile station. In an embodiment, a mobile station signals the system to indicate that power available to the mobile station is less than or greater than a predetermined threshold and that timers for controlling transitions between packet data service control states are adjusted accordingly. If power is below the predetermined threshold, the time period durations of transition timers for control states that require higher mobile station power can be reduced. The mobile station will then spend less time in those control states, thereby conserving battery power.
    Type: Grant
    Filed: February 26, 1999
    Date of Patent: August 14, 2001
    Assignee: Nokia Mobile Phones Ltd
    Inventors: Steven D. Gray, George Fry
  • Patent number: 6108323
    Abstract: A method and system for operating a CDMA cellular telecommunications system having beamforming antennas in combination with other antenna access techniques. System capacity and demand on system resources are dynamically adjusted using beamforming antennas for some mobile stations, and other antenna access techniques for other mobile stations. Forward link channels on the beamforming and non-beamforming antennas are dynamically allocated among mobile stations depending upon resources available and the type of channel required by each mobile station. Forward link channels requiring a higher data rate, above a predetermined threshold, may be assigned to channels transmitted on beamformed antennas. In an embodiment of the invention, the cellular system includes beamformed and non-beamforming antennas.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: August 22, 2000
    Assignee: Nokia Mobile Phones Limited
    Inventor: Steven D Gray
  • Patent number: 6009129
    Abstract: In the front end of a CDMA cellular or broadband PCS mobile phone receiver, a switched bypass connection is provided to bypass the low noise amplifier, sending the received signal through an amplifier bypass connection. The amplifier bypass connection may include an attenuator. The switched bypass is activated by a control signal generated by a digital signal processor. The digital signal processor analyzes the received signal to detect and determine the relative contribution of the IMD interference to the total received signal power and, when the IMD interference exceeds a predetermined level, sends a control signal to bypass the low noise amplifier. Identification of the presence of IMD interference is by spectral estimation to discern when the mobile phone is in the presence of large near-band signals from an AMPS or other narrow-band base station which causes in-band IMD.
    Type: Grant
    Filed: February 28, 1997
    Date of Patent: December 28, 1999
    Assignee: Nokia Mobile Phones
    Inventors: Thomas J. Kenney, Ilkka Niva, Steven D. Gray, Joe Dowling
  • Patent number: D488200
    Type: Grant
    Filed: January 8, 2003
    Date of Patent: April 6, 2004
    Assignee: Taylor Made Golf Company, Inc.
    Inventors: Thomas Olsavsky, Sherry L. Jones, Sean Toulon, Steven D. Gray, Mark A. Morgulis
  • Patent number: D402343
    Type: Grant
    Filed: October 31, 1997
    Date of Patent: December 8, 1998
    Assignee: Callaway Golf Company
    Inventors: Richard C. Helmstetter, Steven D. Gray, Roger C. Cleveland