David Johnson
76Patents
14h-index
63Co-inventors
87Inventor score
Filing activity: Sep 13, 1976 → Apr 11, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4737123A | Connector assembly for packaged microwave integrated circuits | Electricity | 126 | Expired |
| US4976848A | Hydrodemetalation and hydrodesulfurization using a catalyst of specified macroporosity | Chemistry; Metallurgy | 95 | Expired |
| US5089463A | Hydrodemetalation and hydrodesulfurization catalyst of specified macroporosity | Performing Operations; Transporting | 55 | Expired |
| US4896437A | Insulated boot and gaiter combination | Human Necessities | 49 | Expired |
| US5472928A | Catalyst, method and apparatus for an on-stream particle replacement system for countercurrent contact of a gas and liquid feed stream with a packed bed | Performing Operations; Transporting | 40 | Expired |
| US7585554B2 | Wound dressing, ingredient delivery device and IV hold-down incorporating a statically retained handle | Emerging Cross-Sectional Technologies | 30 | Active |
| US6605206B1 | Process for increasing the yield of lubricating base oil from a Fischer-Tropsch plant | Emerging Cross-Sectional Technologies | 26 | Expired |
| US5368889A | Method of making thin film composite membranes | Performing Operations; Transporting | 23 | Expired |
| US4789462A | Reverse-graded catalyst systems for hydrodemetalation and hydrodesulfurization | Chemistry; Metallurgy | 18 | Expired |
| US7888546B2 | Wound dressing, ingredient delivery device and IV hold-down, and method relating to same | Human Necessities | 16 | Expired |
| US5969805A | Method and apparatus employing external light source for endpoint detection | Electricity | 16 | Expired |
| US5733440A | Catalyst, method and apparatus for an on-stream particle replacement system for countercurrent contact of a gas and liquid feed stream with a packed bed | Performing Operations; Transporting | 15 | Expired |
| US4579872A | Uniform minimization of plastic foam cell size | Emerging Cross-Sectional Technologies | 15 | Expired |
| US6838390B2 | Method and apparatus for plasma etching a wafer | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4790367A | Methods for preparing a formed cellular plastic material pattern employed in metal casting | Performing Operations; Transporting | 14 | Expired |
| US8785332B2 | Method and apparatus for plasma dicing a semi-conductor wafer | Emerging Cross-Sectional Technologies | 14 | Active |
| US6268203A | Biological control of purple loosestrife | Human Necessities | 14 | Expired |
| US6119418A | Pre-stressed built-up insulated construction panel | Fixed Constructions | 14 | Expired |
| US6703535B2 | Process for upgrading fischer-tropsch syncrude using thermal cracking and oligomerization | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5599440A | Catalyst method and apparatus for an on-stream particle replacement system for countercurrent contact of a gas and liquid feed stream with a packed bed | Performing Operations; Transporting | 11 | Expired |
| US6509960B2 | Method and apparatus employing external light source for endpoint detection | Electricity | 11 | Expired |
| US8802545B2 | Method and apparatus for plasma dicing a semi-conductor wafer | Emerging Cross-Sectional Technologies | 11 | Active |
| US6457978B1 | Method and apparatus for arranging cable connectors to allow for easier cable installation | Electricity | 9 | Expired |
| US5498327A | Catalyst, method and apparatus for an on-stream particle replacement system for countercurrent contact of a gas and liquid feed stream with a packed bed | Performing Operations; Transporting | 9 | Expired |
| US6256094A | Method and apparatus for automated, in situ material detection using filtered fluoresced, reflected, or absorbed light | Physics | 8 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.