Frederick R. Hatch
20Patents
9h-index
14Co-inventors
72Inventor score
Filing activity: Feb 1, 1985 → Oct 4, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4943068A | Unitized exclusion seal | Emerging Cross-Sectional Technologies | 36 | Expired |
| US4739998A | Bidirectional seal with elliptical sealing barriers | Mechanical Engineering; Lighting; Heating | 31 | Expired |
| US6367810B1 | Self-centering shaft seal system | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US5052696A | Compact compressor seal | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US4664392A | Seal assembly for a vehicle air conditioning compressor | Emerging Cross-Sectional Technologies | 18 | Expired |
| US7055828B2 | Shaft seal | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US4583749A | Seal assembly for a vehicle air conditioning compressor | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US6620361B1 | Method of manufacturing a composite seal | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5326111A | Separately bonded elastomeric sleeve for seal casing | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US7419165B2 | Seal assembly and method of manufacturing the same | Emerging Cross-Sectional Technologies | 8 | Expired |
| US6988733B2 | Bonded PTFE radial shaft seal | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US8480092B2 | Radial seal and method of making | Mechanical Engineering; Lighting; Heating | 7 | Active |
| US8235391B2 | Radial shaft seal assembly with lubrication retention and debris exclusion feature and method of construction thereof | Emerging Cross-Sectional Technologies | 5 | Active |
| US7832100B2 | Seal assembly and method of manufacturing the same | Emerging Cross-Sectional Technologies | 4 | Active |
| US9394998B2 | Radial shaft seal assembly with snap in auxiliary member | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US8573602B2 | Radial shaft seal with dust exclusion and hydrodynamic sealing feature | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US8459654B2 | Hydrodynamic seal with increased flexibility sealing element | Emerging Cross-Sectional Technologies | 3 | Active |
| US8505926B2 | Low torque shaft seal with improved seal element bond joint | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US8029714B2 | Radial seal and method of making | Emerging Cross-Sectional Technologies | 0 | Active |
| US7959840B2 | Method of constructing a low torque shaft seal | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.