Patents by Inventor Mihai Marcu

Mihai Marcu 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: 20230175819
    Abstract: Disclosed herein is a windage-adjustable optics mount with at least one external windage adjustment tool. Further disclosed herein is a method of adjusting the windage of an aiming device mounted on an adjustable windage optics mount by way of an external windage adjustment tool. The external windage adjustment tool may provide a means for adjusting windage by incrementally pivoting one end of a rail, upon which an aiming device may be mounted, relative to an opposite end of the rail, thereby allowing the rail to function as a windage-adjustable rail. A windage-adjustable rail may include an optics mounting feature, for example a Picatinny rail (also known as MIL-STD-1913 rail), and an arrangement of holes and recesses necessary for alignment and for securing to a base member.
    Type: Application
    Filed: December 5, 2022
    Publication date: June 8, 2023
    Inventor: Mihai Marcu
  • Patent number: 10082003
    Abstract: A main bore is drilled and a treatment assembly is located. A packer is located to support a whipstock for drilling the lateral. This packer serves as a lower seal on a main bore diverter. The whipstock is installed on the packer and a mill drills a window and the lateral. The mill is pulled and the whipstock removed with a fixed lug tool. A bottom hole assembly is run into the lateral which includes a diverter that is landed by the window. If cementing is called for it is done at this time. A top string is installed that isolates the upper casing. The lateral is treated with the main bore isolated. The diverter is retrieved through the top string. The main bore diverter is run in through top string and landed in the junction with the window and lateral isolated. The main bore diverter is removed through the top string. The treatment bottom hole assembly has a series of sliding sleeves operated by a single size ball.
    Type: Grant
    Filed: May 16, 2016
    Date of Patent: September 25, 2018
    Assignee: Baker Hughes, a GE company, LLC
    Inventors: Joseph Sheehan, Mihai Marcu, Dennis M. Collins, Jr., Scott F. Donald, Richard R. Lafitte
  • Publication number: 20170328177
    Abstract: A main bore is drilled and a treatment assembly is located. A packer is located to support a whipstock for drilling the lateral. This packer serves as a lower seal on a main bore diverter. The whipstock is installed on the packer and a mill drills a window and the lateral. The mill is pulled and the whipstock removed with a fixed lug tool. A bottom hole assembly is run into the lateral which includes a diverter that is landed by the window. If cementing is called for it is done at this time. A top string is installed that isolates the upper casing. The lateral is treated with the main bore isolated. The diverter is retrieved through the top string. The main bore diverter is run in through top string and landed in the junction with the window and lateral isolated. The main bore diverter is removed through the top string. The treatment bottom hole assembly has a series of sliding sleeves operated by a single size ball.
    Type: Application
    Filed: May 16, 2016
    Publication date: November 16, 2017
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Joseph Sheehan, Mihai Marcu, Dennis M. Collins, JR., Scott F. Donald, Richard R. Lafitte
  • Patent number: 7814981
    Abstract: Disclosed herein is an equalizer and fracture valve system. The system includes, a tubular, at least one fracture valve disposed at the tubular is openable and closeable to flow therethrough, and at least one equalizer disposed at the tubular is openable to flow therethrough.
    Type: Grant
    Filed: August 26, 2008
    Date of Patent: October 19, 2010
    Assignee: Baker Hughes Incorporated
    Inventor: Mihai Marcu
  • Publication number: 20100051291
    Abstract: Disclosed herein is an equalizer and fracture valve system. The system includes, a tubular, at least one fracture valve disposed at the tubular is openable and closeable to flow therethrough, and at least one equalizer disposed at the tubular is openable to flow therethrough.
    Type: Application
    Filed: August 26, 2008
    Publication date: March 4, 2010
    Applicant: BAKER HUGHES INCORPORATED
    Inventor: Mihai Marcu
  • Patent number: 5905416
    Abstract: A duplexer, usable to interlink a receiver unit, transmitter unit, and an antenna unit of a communication system, has a body that includes cavities and interconnecting apertures. The duplexer further includes resonator covers that cover the cavities and apertures from a bottom side of the body and tuning covers that cover the cavities and apertures from a top side of the body. The resonator covers have integral resonator posts that extend into the cavities when the resonator covers are press-fitted into the body. The tuning covers have threaded openings for the insertion of tuning screws into the cavities and for the insertion of coupling screws into the apertures. The cavities and apertures are tuned to reflect or pass signals of selected frequencies by turning the tuning screws and coupling screws.
    Type: Grant
    Filed: January 8, 1998
    Date of Patent: May 18, 1999
    Assignee: Glenayre Electronics, Inc.
    Inventors: Hartmut Schmid, Gregory Deane Soderling, Mihai Marcu