Inventor

YUAN MIN MARK

US20 patents

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

YUAN MIN MARK

HALLIBURTON ENERGY SERVICES INC

Buoyancy assist tool with debris barrier

Downhole apparatus with degradable plugs

Buoyancy assist tool with waffle debris barrier

Buoyancy assist tool with center diaphragm debris barrier

Downhole apparatus

Buoyancy assist tool

Buoyancy assist tool with floating piston

Buoyancy assist tool with annular cavity and piston

Buoyancy assist tool

Differential fill valve with collet sleeve

Buoyancy assist tool with degradable nose

Downhole apparatus with removable plugs

Threadless float equipment and method

Buoyancy assist tool with overlapping membranes

Plug piston barrier

Flapper disk for buoyancy assisted casing equipment

CNPC USA CORP

Frac plug device for high expansion at the setting position

Frac plug device with an anchor mandrel assembly for a locked set configuration

Molded articles of modified polyglycolic acid for degradable downhole tools application

KRUSH ROBERT

Premium mesh screen