The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 18, 2025
Filed:
Jan. 20, 2023
Applicant:
Halliburton Energy Services, Inc., Houston, TX (US);
Inventors:
Lucian Popescu, Houston, TX (US);
Faisal Shah, Houston, TX (US);
Thong Minh Nguyen, Houston, TX (US);
Brian A Roberson, Houston, TX (US);
Assignee:
Halliburton Energy Services, Inc., Houston, TX (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F 27/24 (2006.01); H01F 27/28 (2006.01); H03H 7/01 (2006.01);
U.S. Cl.
CPC ...
H03H 7/0138 (2013.01); H01F 27/24 (2013.01); H01F 27/28 (2013.01);
Abstract
An electromagnetic interference (EMI) filter disposed in a downhole tool. The EMI filter may include at least one common mode choke. The at least one common mode choke may include a high permeability magnetic core and three coils wound around the high permeability magnetic core. The three coils may include an input and an output. The EMI filter may further include a power supply connected to two coils of the three coils and a common ground connected to a third coil of the three coils.