John W. Hoffman
24Patents
6h-index
39Co-inventors
69Inventor score
Filing activity: Jun 12, 1979 → May 31, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5098752A | Recoverable elastomeric sleeve and method for installation and use | Emerging Cross-Sectional Technologies | 46 | Expired |
| US5171388A | Apparatus for and method of applying an elastic material to a flexible backing | Emerging Cross-Sectional Technologies | 44 | Expired |
| US7252730B2 | Method and apparatus for applying an elastic member | Human Necessities | 28 | Expired |
| US4257863A | Gas sensors and method of making such sensors | Physics | 14 | Expired |
| US5597010A | Safety cap for fluid valve | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5281763A | Cable blocking | Emerging Cross-Sectional Technologies | 8 | Expired |
| US7443089B2 | Spark plug with tapered fired-in suppressor seal | Electricity | 6 | Active |
| US8839753B2 | Corona igniter having improved gap control | Emerging Cross-Sectional Technologies | 5 | Active |
| US7243403B2 | Buckle safety device | Emerging Cross-Sectional Technologies | 5 | Expired |
| US8434443B2 | Igniter system for igniting fuel | Mechanical Engineering; Lighting; Heating | 4 | Active |
| US7969077B2 | Spark plug with an improved seal | Electricity | 3 | Active |
| US8079136B2 | Method for forming layered heating element for glow plug | Emerging Cross-Sectional Technologies | 3 | Active |
| US7858547B2 | Ceramic with improved high temperature electrical properties for use as a spark plug insulator | Chemistry; Metallurgy | 3 | Active |
| US7607206B2 | Method for forming layered heating element for glow plug | Emerging Cross-Sectional Technologies | 3 | Active |
| US11105909B2 | Tracking system for persons and/or objects | Physics | 3 | Active |
| US7572480B2 | Method of fabricating a multilayer ceramic heating element | Electricity | 2 | Active |
| US8013502B2 | Small-diameter spark plug with resistive seal | Electricity | 1 | Active |
| US11219556B2 | Manufacturing processes for absorbent articles with improved side seam bonding | Performing Operations; Transporting | 1 | Active |
| US7721238B2 | Method and apparatus for configurable printed circuit board circuit layout pattern | Emerging Cross-Sectional Technologies | 1 | Active |
| US8012898B2 | Ceramic with improved high temperature electrical properties for use as a spark plug insulator | Chemistry; Metallurgy | 1 | Active |
| US8272909B2 | Method of assembling a small-diameter spark plug with resistive seal | Electricity | 0 | Active |
| US9633541B2 | Display system for tracking large numbers of persons and/or objects | Physics | 0 | Active |
| US9767241B2 | Method and apparatus for printed circuit board with stiffener | Emerging Cross-Sectional Technologies | 0 | Active |
| US8680758B2 | Spark plug having a plastic upper insulator and method of construction | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.