Houston, Texas
United States
13
2024-09-26
The entities that hold a legal rights for patent applications filed by inventor HEARN David D.:
David D. HEARN from Houston, US has applied for patents for these inventions. The list has both pending applications and granted patents:
TOOL FOR METAL PLUGGING OR SEALING OF CASING
#2 | 2023-11-23Nano-thermite well plug
#3 | 2022-09-29Tool for metal plugging or sealing of casing
#4 | 2022-09-15Through tubing P AND A with bismuth alloys
#5 | 2021-03-25Nano-thermite well plug
#6 | 2020-12-03Tool for metal plugging or sealing of casing
#7 | 2019-05-02Through tubing P and A with bismuth alloys
#8 | 2018-05-31Tool for metal plugging or sealing of casing
#9 | 2018-04-05Nano-thermite well plug
#10 | 2016-03-31REDUCED FLOW MILLING
#11 | 2010-12-09Permanent bypass whipstock assembly for drilling and completing a sidetrack well and preserving access to the original wellbore
#12 | 2010-09-02Directional sidetrack well drilling system
#13 | 2010-06-17Mill-through tailpipe liner exit and method of use thereof
1488067 ⎘