Patents by Inventor Rajesh S

Rajesh S 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: 20020108938
    Abstract: A method for material processing using a pulsed laser includes generating a beam of laser pulses, focusing the beam in a plane above the surface of a workpiece, causing breakdown of matter at a lasing point, and removing or modifying material of the workpiece. Positioning the focal plane of the laser above the workpiece permits the use of higher intensity laser beam pulses and minimizes ill effects of workpiece surface conditions on laser energy absorption. In a second aspect, a method for material processing further includes using vacuum to remove the material removed by the beam, preferably by a push-pull type air vacuum system located slightly above the workpiece surface, thereby providing cleaner workpiece and feature surfaces.
    Type: Application
    Filed: February 9, 2001
    Publication date: August 15, 2002
    Inventor: Rajesh S. Patel
  • Patent number: 6427324
    Abstract: A multilayer thin film structure having defined strap repair lines thereon and a method for repairing interconnections in the multilayer thin film structure (MLTF) and/or making engineering changes (EC) are provided. The method comprises determining interconnection defects in the MLTF at a thin film layer adjacent the top metal layer of the structure, defining the top surface metallization including a series of orthogonal X conductor lines and Y conductor lines using photoresist and lithography and additive or phototool to selectively expose the photoresist to define top surface strap connections needed to repair the interconnections and/or make EC's, and forming the top surface metallization.
    Type: Grant
    Filed: July 13, 1998
    Date of Patent: August 6, 2002
    Assignee: International Business Machines Corporation
    Inventors: Peter A. Franklin, Arthur G. Merryman, Rajesh S. Patel, Thomas A. Wassick
  • Publication number: 20020088781
    Abstract: A nozzle comprising a thin, flexible substantially planar polymeric film having a plurality of pores with structures allowing for generation of an aerosol at reduced extrusion pressure is disclosed. The pores can comprise at least two sections, or steps, in which the thickness of the membrane is reduced in stepwise fashion, or the pores can be tapered. Nozzles formed comprising pores having such structures permit aerosol generation at lower extrusion pressures, thereby allowing for decreased weight of aerosolization devices, increased efficiency, increased portability and increased battery life. The pore structures also allow for the use of thicker, more easily processed polymeric films in manufacturing while having a thinner, more efficient aerosolization area. The use of decreased extrusion pressures also results in increased uniformity in aerosol generation and improved reliability of other components.
    Type: Application
    Filed: October 26, 2001
    Publication date: July 11, 2002
    Inventors: Rajesh S. Patel, Sudarsan Srinivasan
  • Publication number: 20020055993
    Abstract: A transport service provider provides a credit-based flow control scheme and is designed to operate over VI Architecture. The credit-based flow control scheme reduces overhead (e.g., reduces buffer copies and kernel processing) by relying upon the reliability properties of the underlying VI Architecture. If the number of send credits is sufficient, then the sender prepares and sends the packet. Otherwise, the sender sends a Credit Request and waits for a Credit Response. Upon receiving the corresponding Credit Response, the sender continues sending data packets. In response to a sender's Credit Request, the receiver sends the Credit Response only when it has enough receive credits (above a threshold value or low water mark).
    Type: Application
    Filed: October 31, 2001
    Publication date: May 9, 2002
    Inventors: Hemal V. Shah, Rajesh S. Madukkarumukumana
  • Patent number: 6354516
    Abstract: A nozzle comprising a thin, flexible substantially planar polymeric film having a plurality of pores with structures allowing for generation of an aerosol at reduced extrusion pressure is disclosed. The pores can comprise at least two sections, or steps, in which the thickness of the membrane is reduced in stepwise fashion, or the pores can be tapered. Nozzles formed comprising pores having such structures permit aerosol generation at lower extrusion pressures, thereby allowing for decreased weight of aerosolization devices, increased efficiency, increased portability and increased battery life. The pore structures also allow for the use of thicker, more easily processed polymeric films in manufacturing while having a thinner, more efficient aerosolization area. The use of decreased extrusion pressures also results in increased uniformity in aerosol generation and improved reliability of other components.
    Type: Grant
    Filed: November 2, 1999
    Date of Patent: March 12, 2002
    Assignee: Aradigm Corporation
    Inventors: Rajesh S. Patel, Sudarsan Srinivasan
  • Patent number: 6347337
    Abstract: A transport service provider provides a credit-based flow control scheme and is designed to operate over VI Architecture. The credit-based flow control scheme reduces overhead (e.g., reduces buffer copies and kernel processing) by relying upon the reliability properties of the underlying VI Architecture. If the number of send credits is sufficient, then the sender prepares and sends the packet. Otherwise, the sender sends a Credit Request and waits for a Credit Response. Upon receiving the corresponding Credit Response, the sender continues sending data packets. In response to a sender's Credit Request, the receiver sends the Credit Response only when it has enough receive credits (above a threshold value or low water mark).
    Type: Grant
    Filed: August 20, 1999
    Date of Patent: February 12, 2002
    Assignee: Intel Corporation
    Inventors: Hemal V. Shah, Rajesh S. Madukkarumukumana
  • Patent number: 6295986
    Abstract: A method for producing a nozzle useful in generating a fine aerosol for delivery of a therapeutic or diagnostic agent is provided. The method comprises treating a thin, preferably flexible material having partially formed nozzles with a plasma which alters the size and shape of the nozzles. The pores in the nozzles so formed preferably have an unflexed exit aperture diameter in the range of about 0.5 to about 25 microns, depending on the size of the aerosol particles desired for a given application. The pores in the nozzles can have a variety of shapes and can be distributed in a variety of patterns. An elevated area can be formed around the exit aperture of the nozzle in order to prevent intrusion of liquid back into the nozzle. A method of producing an aerosolization device incorporating such a nozzle is also provided.
    Type: Grant
    Filed: January 12, 2000
    Date of Patent: October 2, 2001
    Assignee: Aradigm Corporation
    Inventors: Rajesh S. Patel, Sudarsan Srinivasan
  • Publication number: 20010010224
    Abstract: A nozzle comprised of a thin, flexible membrane material having a plurality of pores is disclosed. In one embodiment, the pores have an unflexed exit aperture diameter in the range of about 0.5 to about 2 microns (preferably about 1 micron) and are positioned substantially uniformly in the material, preferably about 50 microns apart. The nozzle preferably has a conical or trumpet-shaped cross-section. In another aspect of the invention, the exit aperture of the nozzle is surrounded by an elevated area protruding above the substantially planar exit side of the membrane in order to prevent intrusion of liquid back into the nozzle. The nozzle can be used to form an aerosol containing a pharmaceutical composition from the exit side of the nozzle upon forcible application of the composition to the entrance side of the nozzle. This aerosol can be used to administer the pharmaceutical composition, for example, to the eye or to a selected portion of the respiratory tract.
    Type: Application
    Filed: March 2, 2001
    Publication date: August 2, 2001
    Inventors: Igor Gonda, Jeffrey A. Schuster, Rajesh S. Patel
  • Patent number: 6230706
    Abstract: A nozzle comprised of a thin, flexible membrane material having a plurality of pores is disclosed. In one embodiment, the pores have an unflexed exit aperture diameter in the range of about 0.5 to about 2 microns (preferably about 1 micron) and are positioned substantially uniformly in the material, preferably about 50 microns apart. The nozzle preferably has a conical or trumpet-shaped cross-section. In another aspect of the invention, the exit aperture of the nozzle is surrounded by an elevated area protruding above the substantially planar exit side of the membrane in order to prevent intrusion of liquid back into the nozzle. The nozzle can be used to form an aerosol containing a pharmaceutical composition from the exit side of the nozzle upon forcible application of the composition to the entrance side of the nozzle. This aerosol can be used to administer the pharmaceutical composition, for example, to the eye or to a selected portion of the respiratory tract.
    Type: Grant
    Filed: June 5, 2000
    Date of Patent: May 15, 2001
    Assignee: Aradigm Corporation
    Inventors: Igor Gonda, Jeffrey A. Schuster, Rajesh S. Patel
  • Patent number: 6198735
    Abstract: The present invention provides a method for retransmitting a data packet in a packet network. Compressed data packets are sent from a first network entity to a second network entity. It is then determined if a compressed data packet has not been properly received at the second network entity. If the compressed data packet has not been properly received, the second network entity signals the first network entity to send an uncompressed version of the improperly received compressed data packet.
    Type: Grant
    Filed: May 20, 1999
    Date of Patent: March 6, 2001
    Assignee: Motorola, Inc.
    Inventors: Rajesh S. Pazhyannur, Irfan Ali
  • Patent number: 6070575
    Abstract: A nozzle comprised of a thin, flexible membrane material having a plurality of pores is disclosed. In one embodiment, the pores have an unflexed exit aperture diameter in the range of about 0.5 to about 2 microns (preferably about 1 micron) and are positioned substantially uniformly in the material, preferably about 50 microns apart. The nozzle preferably has a conical or trumpet-shaped cross-section. In another aspect of the invention, the exit aperture of the nozzle is surrounded by an elevated area protruding above the substantially planar exit side of the membrane in order to prevent intrusion of liquid back into the nozzle. The nozzle can be used to form an aerosol containing a pharmaceutical composition from the exit side of the nozzle upon forcible application of the composition to the entrance side of the nozzle. This aerosol can be used to administer the pharmaceutical composition, for example, to the eye or to a selected portion of the respiratory tract.
    Type: Grant
    Filed: November 16, 1998
    Date of Patent: June 6, 2000
    Assignee: Aradigm Corporation
    Inventors: Igor Gonda, Jeffrey A. Schuster, Rajesh S. Patel
  • Patent number: 5756236
    Abstract: A method of fabricating a high resolution ablation mask for use at laser fluences of greater than 200 mJ/cm.sup.2 is disclosed. The method comprises combining dry etching and chemical etching of an unetched ablation mask which comprises a transparent substrate, a layer of high UV light refractivity material, e.g. aluminum, deposited on said substrate, and a photoresist layer positioned on a predetermined area of said high UV light refractivity material layer leaving other areas of said high UV light refractivity material layer exposed.
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: May 26, 1998
    Assignee: International Business Machines Corporation
    Inventors: Steven A. Cordes, James L. Speidell, Rajesh S. Patel
  • Patent number: 5536605
    Abstract: A repaired laser ablation mask is disclosed capable of withstanding laser fluences in the range from about 200 mJ/cm.sup.2 to at least 500 mJ/cm.sup.2. The repaired mask comprises a single or multiple layers of apertured metal, such as, aluminum, on a quartz substrate. The laser mask repair technique and structure are also disclosed. The thickness of the metal layer, such as, aluminum layer, is in the range from about 2 microns to about 6 microns. A laser projection etching technique is also disclosed for using the repaired ablation mask.
    Type: Grant
    Filed: May 22, 1995
    Date of Patent: July 16, 1996
    Assignee: International Business Machines Corporation
    Inventors: Rajesh S. Patel, Laertis Economikos
  • Patent number: 5534371
    Abstract: A repaired laser ablation mask is disclosed capable of withstanding laser fluences in the range from about 200 mJ/cm.sup.2 to at least 500 mJ/cm.sup.2. The repaired mask comprises a single or multiple layers of apertured metal, such as, aluminum, on a quartz substrate. The laser mask repair technique and structure are also disclosed. The thickness of the metal layer, such as, aluminum layer, is in the range from about 2 microns to about 6 microns. A laser projection etching technique is also disclosed for using the repaired ablation mask.
    Type: Grant
    Filed: May 22, 1995
    Date of Patent: July 9, 1996
    Assignee: International Business Machines Corporation
    Inventors: Rajesh S. Patel, Laertis Economikos