HEI
🏢 View company profile →19Patents
1Active
19Granted
49Portfolio score
Filing activity: Feb 16, 1977 → Apr 26, 2023
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4550250A | Cordless digital graphics input device | Physics | 196 | Expired |
| US6798223B2 | Test methods, systems, and probes for high-frequency wireless-communications devices | Physics | 131 | Expired |
| US6696952B2 | Structures and assembly methods for radio-frequency-identification modules | Physics | 106 | Expired |
| US4677428A | Cordless light pen | Physics | 94 | Expired |
| US5847930A | Edge terminals for electronic circuit modules | Emerging Cross-Sectional Technologies | 49 | Expired |
| US5936847A | Low profile electronic circuit modules | Electricity | 41 | Expired |
| US6674869B2 | Hearing-aid assembly using folded flex circuits | Electricity | 25 | Expired |
| US4587421A | Photo-optic transducing head assembly | Electricity | 14 | Expired |
| US6294966A | Interconnection device | Electricity | 11 | Expired |
| US6014320A | High density stacked circuit module | Electricity | 8 | Expired |
| US4104603A | Tactile feel device | Electricity | 8 | Expired |
| US6469592B2 | High-frequency interconnection for circuits | Electricity | 7 | Expired |
| US6646521B1 | Connection for conducting high frequency signal between a circuit and a discrete electric component | Electricity | 6 | Expired |
| US4603261A | Document reading apparatus | Physics | 5 | Expired |
| US7624499B2 | Flexible circuit having an integrally formed battery | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4578569A | Multi-width card reader with cancellation feature | Physics | 4 | Expired |
| US6517282B2 | Erosion control mats | Fixed Constructions | 3 | Expired |
| US6838953B2 | High-frequency interconnection for circuits | Electricity | 0 | Expired |
| US12345773B2 | System for estimating the state of health (SOH) of battery, system and method for deriving parameters therefor | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.