Inventor

DUONG KHANH ANH

US6 patents

⚠️ This page may combine multiple inventors who share the name “DUONG KHANH ANH”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

DUONG KHANH ANH

2 patents

US8851185B2Oct 7, 2014

Dual metal seal system

DUONG KHANH ANH2 citations56

US8720586B2May 13, 2014

Hybrid seal

DUONG KHANH ANH3 citations56

VETCO GRAY INC

1 patent

US10113383B2Oct 30, 2018

Positive retention lock ring for tubing hanger

VETCO GRAY INC7 citations82

HUNTER RICK C

1 patent

US9163739B2Oct 20, 2015

High temperature coating resistant to damage from decompression

HUNTER RICK C2 citations60

HOANG CHAU

1 patent

US8870186B2Oct 28, 2014

Seal assembly for a casing hanger

HOANG CHAU3 citations50

PRIME DOWNHOLE MFG LLC

1 patent

US10594068B2Mar 17, 2020

Retention of electrical spring contacts for wet connection of down-hole tool components

PRIME DOWNHOLE MFG LLC0 citations34