Mark D. Matzner
25Patents
18h-index
10Co-inventors
78Inventor score
Filing activity: Jul 10, 1992 → Oct 27, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7364412B2 | System, method, and apparatus for valve stop assembly in a reciprocating pump | Mechanical Engineering; Lighting; Heating | 58 | Expired |
| US6945569B1 | Enhanced durability hammer union | Mechanical Engineering; Lighting; Heating | 56 | Expired |
| US8376723B2 | Connecting rod without wrist pin | Mechanical Engineering; Lighting; Heating | 45 | Active |
| US5246355A | Well service pumping assembly | Mechanical Engineering; Lighting; Heating | 44 | Expired |
| US5689862A | Safety clamp | Emerging Cross-Sectional Technologies | 40 | Expired |
| US7549681B1 | Flowline clamp connector | Emerging Cross-Sectional Technologies | 39 | Active |
| USD687125S1 | Fluid end | General | 39 | Active |
| US8402880B2 | Packing nut lock and access bore cover locking assembly | Emerging Cross-Sectional Technologies | 38 | Active |
| US7404704B2 | Manifold assembly for reciprocating pump | Mechanical Engineering; Lighting; Heating | 37 | Expired |
| US7204525B2 | Flowline clamp connector | Emerging Cross-Sectional Technologies | 36 | Expired |
| USD641382S1 | Stay rod for reciprocating pump | General | 31 | Expired |
| US7451959B2 | Plug valve having a seal boss | Emerging Cross-Sectional Technologies | 27 | Active |
| US6298882A | Explosion resistant blanket for flow line | Mechanical Engineering; Lighting; Heating | 26 | Expired |
| US6978799B2 | Emergency pressure relief valve with enhanced reset | Emerging Cross-Sectional Technologies | 24 | Expired |
| US6209561A | Emergency pressure relief valve | Emerging Cross-Sectional Technologies | 24 | Expired |
| US7219594B2 | Coolant system for piston and liner of reciprocating pumps | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US5823093A | Liner assembly with a fluid end cylinder | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US8162631B2 | Floating pinion bearing for a reciprocating pump | Emerging Cross-Sectional Technologies | 19 | Active |
| US7823265B2 | Flowline torque arm assembly | Emerging Cross-Sectional Technologies | 18 | Active |
| US6481457B2 | Safety restraint assembly for high pressure flow line | Emerging Cross-Sectional Technologies | 17 | Expired |
| USD706397S1 | Portion of fluid end | General | 13 | Active |
| US8870233B2 | Swivel joint with uniform ball bearing requirements | Mechanical Engineering; Lighting; Heating | 12 | Active |
| US7096718B2 | Pressure testing apparatus | Performing Operations; Transporting | 11 | Expired |
| US8695627B2 | Stand for pressure relief valve | Emerging Cross-Sectional Technologies | 11 | Active |
| US9964245B2 | Swivel joint with uniform ball bearing requirements | Mechanical Engineering; Lighting; Heating | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.