Inventor · Porter, TX, US

Gregory L. Hern

68Patents
12h-index
57Co-inventors
87Inventor score

Filing activity: Feb 29, 1988 → Feb 3, 2022

Most-cited inventions

PatentTitleAreaCited byStatus
US9309733B2 Tubular anchoring system and method Fixed Constructions 39 Active
US9605508B2 Disintegrable and conformable metallic seal, and method of making the same Chemistry; Metallurgy 38 Active
US9080403B2 Tubular anchoring system and method Emerging Cross-Sectional Technologies 37 Active
US9016363B2 Disintegrable metal cone, process of making, and use of the same Fixed Constructions 36 Active
US6607031B2 Screened boot basket/filter Fixed Constructions 36 Expired
US8950504B2 Disintegrable tubular anchoring system and method of using the same Fixed Constructions 33 Active
US9033060B2 Tubular anchoring system and method Fixed Constructions 31 Active
US9010416B2 Tubular anchoring system and a seat for use in the same Fixed Constructions 30 Active
US9284803B2 One-way flowable anchoring system and method of treating and producing a well Emerging Cross-Sectional Technologies 28 Active
US5598895A Cutter assembly having a plurality of independently rotatable cutting units thereon Fixed Constructions 19 Expired
US7934559B2 Single cycle dart operated circulation sub Fixed Constructions 17 Active
US8356671B2 Tool with multi-size ball seat having segmented arcuate ball support member Fixed Constructions 14 Active
US8118101B2 Ball catcher with retention capability Fixed Constructions 12 Active
US10227823B2 Window mill hydraulic line connection Fixed Constructions 12 Active
US5363930A Dual-diaphragm lubricant compensator for earth-boring bits Mechanical Engineering; Lighting; Heating 11 Expired
US7513303B2 Wellbore cleanup tool Fixed Constructions 11 Active
US6851472B2 Convertible tubular scraper Fixed Constructions 10 Expired
US6763753B1 Hydraulic wireline cutter Emerging Cross-Sectional Technologies 10 Expired
US10612659B2 Disintegrable and conformable metallic seal, and method of making the same Chemistry; Metallurgy 8 Active
US8739864B2 Downhole multiple cycle tool Fixed Constructions 8 Active
US8678091B2 Magnetic retrieval apparatus and method for retaining magnets on a downhole magnetic retrieval apparatus Emerging Cross-Sectional Technologies 7 Active
US6805197B2 Hydraulic wireline cutter Emerging Cross-Sectional Technologies 7 Expired
US9624751B2 Partly disintegrating plug for subterranean treatment use Fixed Constructions 6 Active
US8353349B2 Retaining and isolating mechanisms for magnets in a magnetic cleaning tool Fixed Constructions 6 Active
US11125045B2 Frac plug system with integrated setting tool Fixed Constructions 6 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.