Jan de Boer
27Patents
9h-index
34Co-inventors
75Inventor score
Filing activity: Mar 12, 1975 → Jun 6, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6421956B1 | Method and apparatus for priming seed | Human Necessities | 47 | Expired |
| US5625950A | Shaving apparatus | Performing Operations; Transporting | 37 | Expired |
| US5687481A | Shaving apparatus with electrically adjustable cutting unit | Performing Operations; Transporting | 29 | Expired |
| US4788252A | Mixtures based on polycarbonates having improved physical and chemical properties | Chemistry; Metallurgy | 22 | Expired |
| US4554471A | Electric motor having a U-shaped stator iron | Electricity | 21 | Expired |
| US5498914A | Capacitive sensor circuit | Electricity | 14 | Expired |
| US5162424A | Polymer mixture comprising polybutylene terephthalate and thermoplastic elastomer; articles formed therefrom | Chemistry; Metallurgy | 14 | Expired |
| US4965338A | PBT with improved tracking resistance | Chemistry; Metallurgy | 11 | Expired |
| US3997967A | Dry shaver with an extendible trimmer | Performing Operations; Transporting | 9 | Expired |
| US4900784A | PBT-PC-rubber-brominated FR high tracking resistance+VO | Chemistry; Metallurgy | 6 | Expired |
| US4942188A | Polymer mixture comprising polybutylene terephthalate, aromatic polycarbonate and polydialkysiloxane | Chemistry; Metallurgy | 6 | Expired |
| US6194868A | Voltage indicator for indicating that the voltage of a battery passes a given value | Physics | 5 | Expired |
| US3983705A | Apparatus for forming a bottom protection | Fixed Constructions | 4 | Expired |
| US4868518A | Quiescent current setting for an amplifier circuit | Electricity | 3 | Expired |
| US4050151A | Dry-shaving apparatus | Performing Operations; Transporting | 3 | Expired |
| US9938401B2 | Fire retardant systems for polymers that enable flexibility and strength | Chemistry; Metallurgy | 3 | Active |
| US6078362A | Device for combining video signals which represent images having a different perception depth | Electricity | 1 | Expired |
| US6982548B2 | Switched mode power supply with delay-compensated current mode control | Electricity | 1 | Expired |
| US11744708B2 | Surface topographies for altering the physiology of living cells | Human Necessities | 0 | Active |
| US12429208B2 | Underwater optical- and mounting assembly | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US4966475A | Bearing support with additional axially resilient ring | Mechanical Engineering; Lighting; Heating | 0 | Expired |
| US10961303B2 | VHH for application in tissue repair, organ regeneration, organ replacement and tissue engineering | Chemistry; Metallurgy | 0 | Active |
| US9340605B2 | VHH for application in tissue repair, organ regeneration, organ replacement and tissue engineering | Chemistry; Metallurgy | 0 | Active |
| US12031709B2 | Underwater optical- and mounting assembly | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US5062984A | Polymer mixture which comprises an aromatic polycarbonate and a polyalkylene terephthalate, and articles formed therefrom | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.