Patents Assigned to Lightwind Corporation
  • Patent number: 7580119
    Abstract: The present invention relates to monitoring chemicals in a process chamber using a spectrometer having a plasma generator, based on patterns over time of chemical consumption. The relevant patterns may include a change in consumption, reaching a consumption plateau, absence of consumption, or presence of consumption. In some embodiments, advancing to a next step in forming structures on the workpiece depends on the pattern of consumption meeting a process criteria. In other embodiments, a processing time standard is established, based on analysis of the relevant patterns. Yet other embodiments relate to controlling work on a workpiece, based on analysis of the relevant patterns. The invention may be either a process or a device including logic and resources to carry out a process.
    Type: Grant
    Filed: November 24, 2008
    Date of Patent: August 25, 2009
    Assignee: Lightwind Corporation
    Inventors: Gary B. Powell, Herbert E. Litvak
  • Publication number: 20090075403
    Abstract: The present invention relates to monitoring chemicals in a process chamber using a spectrometer having a plasma generator, based on patterns over time of chemical consumption. The relevant patterns may include a change in consumption, reaching a consumption plateau, absence of consumption, or presence of consumption. In some embodiments, advancing to a next step in forming structures on the workpiece depends on the pattern of consumption meeting a process criteria. In other embodiments, a processing time standard is established, based on analysis of the relevant patterns. Yet other embodiments relate to controlling work on a workpiece, based on analysis of the relevant patterns. The invention may be either a process or a device including logic and resources to carry out a process.
    Type: Application
    Filed: November 24, 2008
    Publication date: March 19, 2009
    Applicant: Lightwind Corporation
    Inventors: Gary B. Powell, Herbert E. Litvak
  • Patent number: 7456939
    Abstract: The present invention relates to monitoring chemicals in a process chamber using a spectrometer having a plasma generator, based on patterns over time of chemical consumption. The relevant patterns may include a change in consumption, reaching a consumption plateau, absence of consumption, or presence of consumption. In some embodiments, advancing to a next step in forming structures on the workpiece depends on the pattern of consumption meeting a process criteria. In other embodiments, a processing time standard is established, based on analysis of the relevant patterns. Yet other embodiments relate to controlling work on a workpiece, based on analysis of the relevant patterns. The invention may be either a process or a device including logic and resources to carry out a process.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: November 25, 2008
    Assignee: Lightwind Corporation
    Inventors: Gary B. Powell, Herbert E. Litvak
  • Patent number: 7217371
    Abstract: The present invention relates to interfacing new sensors to incumbent controls. In particular, it relates to optically interfacing a new sensor, such as a spectrometer with plasma generator, to an incumbent electro-optical sensor. Logic and resources to control activation of the incumbent electro-optical sensor may be included. Particular aspects of the present invention are described in the claims, specification and drawings.
    Type: Grant
    Filed: July 26, 2004
    Date of Patent: May 15, 2007
    Assignee: Lightwind Corporation
    Inventor: Herbert E. Litvak
  • Patent number: 7202946
    Abstract: Aspects of the present invention provide novel methods and devices for sampling gas, exciting the sampled gas to emit radiation and detecting in real time from the emitted radiation a plurality of wave bands of an emission spectrum. Energy used to excite the sampled gas may be adjusted based on the detected wave bands. A process may be controlled in real time based on the detected wave bands. Novel interfaces may be used to display portions of the detected wave bands. A known flow of a reference gas may be included in the flow of sampled gases and an unknown flow of an unknown flow gas determined.
    Type: Grant
    Filed: March 27, 2006
    Date of Patent: April 10, 2007
    Assignee: Lightwind Corporation
    Inventors: Gary Powell, Richard L. Hazard
  • Publication number: 20070064227
    Abstract: The present invention relates to monitoring chemicals in a process chamber using a spectrometer having a plasma generator, based on patterns over time of chemical consumption. The relevant patterns may include a change in consumption, reaching a consumption plateau, absence of consumption, or presence of consumption. In some embodiments, advancing to a next step in forming structures on the workpiece depends on the pattern of consumption meeting a process criteria. In other embodiments, a processing time standard is established, based on analysis of the relevant patterns. Yet other embodiments relate to controlling work on a workpiece, based on analysis of the relevant patterns. The invention may be either a process or a device including logic and resources to carry out a process.
    Type: Application
    Filed: June 30, 2006
    Publication date: March 22, 2007
    Applicant: Lightwind Corporation
    Inventors: Gary Powell, Herbert Litvak
  • Publication number: 20060203239
    Abstract: Aspects of the present invention provide novel methods and devices for sampling gas, exciting the sampled gas to emit radiation and detecting in real time from the emitted radiation a plurality of wave bands of an emission spectrum. Energy used to excite the sampled gas may be adjusted based on the detected wave bands. A process may be controlled in real time based on the detected wave bands. Novel interfaces may be used to display portions of the detected wave bands. A known flow of a reference gas may be included in the flow of sampled gases and an unknown flow of an unknown flow gas determined.
    Type: Application
    Filed: March 27, 2006
    Publication date: September 14, 2006
    Applicant: Lightwind corporation
    Inventors: Gary Powell, Richard Hazard
  • Patent number: 7072028
    Abstract: The present invention relates to monitoring chemicals in a process chamber using a spectrometer having a plasma generator, based on patterns over time of chemical consumption. The relevant patterns may include a change in consumption, reaching a consumption plateau, absence of consumption, or presence of consumption. In some embodiments, advancing to a next step in forming structures on the workpiece depends on the pattern of consumption meeting a process criteria. In other embodiments, a processing time standard is established, based on analysis of the relevant patterns. Yet other embodiments relate to controlling work on a workpiece, based on analysis of the relevant patterns. The invention may be either a process or a device including logic and resources to carry out a process.
    Type: Grant
    Filed: July 22, 2004
    Date of Patent: July 4, 2006
    Assignee: Lightwind Corporation
    Inventors: Gary B. Powell, Herbert E. Litvak
  • Patent number: 7019829
    Abstract: Aspects of the present invention provide novel methods and devices for sampling gas, exciting the sampled gas to emit radiation and detecting in real time from the emitted radiation a plurality of wave bands of an emission spectrum. Energy used to excite the sampled gas may be adjusted based on the detected wave bands. A process may be controlled in real time based on the detected wave bands. Novel interfaces may be used to display portions of the detected wave bands. A known flow of a reference gas may be included in the flow of sampled gases and an unknown flow of an unknown flow gas determined.
    Type: Grant
    Filed: September 13, 2004
    Date of Patent: March 28, 2006
    Assignee: Lightwind Corporation
    Inventors: Gary Powell, Richard L. Hazard
  • Publication number: 20050078300
    Abstract: The present invention relates to interfacing new sensors to incumbent controls. In particular, it relates to optically interfacing a new sensor, such as a spectrometer with plasma generator, to an incumbent electro-optical sensor. Logic and resources to control activation of the incumbent electro-optical sensor may be included. Particular aspects of the present invention are described in the claims, specification and drawings.
    Type: Application
    Filed: July 26, 2004
    Publication date: April 14, 2005
    Applicant: Lightwind Corporation
    Inventor: Herbert Litvak
  • Patent number: 6867859
    Abstract: The present invention relates to an apparatus and method for forming a plasma in the exhaust line of a primary process reactor. The plasma is generated in an inductive source (5) to examine the chemical concentrations of the waste or exhaust gas in vacuum lines that are below atmospheric pressure. The optical radiation emitted by the plasma is analyzed by an optical spectrometer (9) and the resulting information is used to diagnose, monitor, or control operating states in the main vacuum vessel.
    Type: Grant
    Filed: August 2, 2000
    Date of Patent: March 15, 2005
    Assignee: Lightwind Corporation
    Inventor: Gary Powell
  • Publication number: 20050046825
    Abstract: The present invention relates to monitoring chemicals in a process chamber using a spectrometer having a plasma generator, based on patterns over time of chemical consumption. The relevant patterns may include a change in consumption, reaching a consumption plateau, absence of consumption, or presence of consumption. In some embodiments, advancing to a next step in forming structures on the workpiece depends on the pattern of consumption meeting a process criteria. In other embodiments, a processing time standard is established, based on analysis of the relevant patterns. Yet other embodiments relate to controlling work on a workpiece, based on analysis of the relevant patterns. The invention may be either a process or a device including logic and resources to carry out a process.
    Type: Application
    Filed: July 22, 2004
    Publication date: March 3, 2005
    Applicant: Lightwind Corporation
    Inventors: Gary Powell, Herbert Litvak
  • Publication number: 20050030531
    Abstract: Aspects of the present invention provide novel methods and devices for sampling gas, exciting the sampled gas to emit radiation and detecting in real time from the emitted radiation a plurality of wave bands of an emission spectrum. Energy used to excite the sampled gas may be adjusted based on the detected wave bands. A process may be controlled in real time based on the detected wave bands. Novel interfaces may be used to display portions of the detected wave bands. A known flow of a reference gas may be included in the flow of sampled gases and an unknown flow of an unknown flow gas determined.
    Type: Application
    Filed: September 13, 2004
    Publication date: February 10, 2005
    Applicant: Lightwind Corporation
    Inventors: Gary Powell, Richard Hazard
  • Patent number: 6791692
    Abstract: Aspects of the present invention provide novel methods and devices for sampling gas, exciting the sampled gas to emit radiation and detecting in real time from the emitted radiation a plurality of wave bands of an emission spectrum. Energy used to excite the sampled gas may be adjusted based on the detected wave bands. A process may be controlled in real time based on the detected wave bands. Novel interfaces may be used to display portions of the detected wave bands. A known flow of a reference gas may be included in the flow of sampled gases and an unknown flow of an unknown flow gas determined.
    Type: Grant
    Filed: October 29, 2001
    Date of Patent: September 14, 2004
    Assignee: Lightwind Corporation
    Inventors: Gary Powell, Richard L. Hazard
  • Patent number: 6757061
    Abstract: Aspects of the present invention provide novel methods and devices for sampling gas, exciting the sampled gas to emit radiation and detecting in real time from the emitted radiation a plurality of wave bands of an emission spectrum. Energy used to excite the sampled gas may be adjusted based on the detected wave bands. A process may be controlled in real time based on the detected wave bands. Novel interfaces may be used to display portions of the detected wave bands. A known flow of a reference gas may be included in the flow of sampled gases and an unknown flow of an unknown flow gas determined.
    Type: Grant
    Filed: December 17, 2002
    Date of Patent: June 29, 2004
    Assignee: Lightwind Corporation
    Inventor: Gary Powell
  • Publication number: 20030133106
    Abstract: Aspects of the present invention provide novel methods and devices for sampling gas, exciting the sampled gas to emit radiation and detecting in real time from the emitted radiation a plurality of wave bands of an emission spectrum. Energy used to excite the sampled gas may be adjusted based on the detected wave bands. A process may be controlled in real time based on the detected wave bands. Novel interfaces may be used to display portions of the detected wave bands. A known flow of a reference gas may be included in the flow of sampled gases and an unknown flow of an unknown flow gas determined.
    Type: Application
    Filed: December 17, 2002
    Publication date: July 17, 2003
    Applicant: Lightwind Corporation
    Inventor: Gary Powell
  • Patent number: 6538734
    Abstract: Aspects of the present invention provide novel methods and devices for sampling gas, exciting the sampled gas to emit radiation and detecting in real time from the emitted radiation a plurality of wave bands of an emission spectrum. Energy used to excite the sampled gas may be adjusted based on the detected wave bands. A process may be controlled in real time based on the detected wave bands. Novel interfaces may be used to display portions of the detected wave bands. A known flow of a reference gas may be included in the flow of sampled gases and an unknown flow of an unknown flow gas determined.
    Type: Grant
    Filed: November 29, 2000
    Date of Patent: March 25, 2003
    Assignee: Lightwind Corporation
    Inventor: Gary Powell