David Norton
27Patents
8h-index
47Co-inventors
75Inventor score
Filing activity: Jul 2, 1980 → Apr 7, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6697209B2 | Phase based time domain tracking for helical scan tape drive | Physics | 19 | Expired |
| US5315168A | Peak hold circuit with improved linearity | Physics | 16 | Expired |
| US5293276A | Method for generating a reference signal from unique servo mark pattern detection | Physics | 16 | Expired |
| US4338876A | Application of liquids to textiles | Performing Operations; Transporting | 14 | Expired |
| US5388010A | Peak detector for detecting accurate pulse peaks produced by a magnetic head exhibiting residual magnetism | Physics | 10 | Expired |
| US6344981B1 | Power supply circuit and method of calibration therefor | Electricity | 8 | Expired |
| US8883222B2 | Disinfectant materials and methods | Human Necessities | 8 | Active |
| US4622599A | Write data transition detector | Physics | 8 | Expired |
| US4868470A | Apparatus and method for detecting a true average of N signal samples | Physics | 7 | Expired |
| US5455720A | Offset and gain error discriminator | Physics | 7 | Expired |
| US5325241A | Write precompensation with frequency synthesizer | Physics | 6 | Expired |
| US10457669B2 | Benzolactam compounds as protein kinase inhibitors | Chemistry; Metallurgy | 4 | Active |
| US6433945B1 | Compensating write data in transformer-coupled recording system using DC content code | Physics | 4 | Expired |
| US11001575B1 | Benzolactam compounds as protein kinase inhibitors | Chemistry; Metallurgy | 3 | Active |
| US7230782B2 | Correlation receiver for demodulating servo track information | Physics | 3 | Expired |
| US8324254B2 | Oxadiazole substituted indazole derivatives for use as sphingosine 1-phosphate (S1P) agonists | Chemistry; Metallurgy | 2 | Active |
| US6343336B1 | Transfer function compatibility for information for information storage reproduction | Physics | 2 | Expired |
| US8101775B2 | Indole derivatives as S1P1 Receptor | Chemistry; Metallurgy | 2 | Active |
| US4746821A | Constant phase limiting independent of input signal amplitude | Electricity | 2 | Expired |
| US7362525B2 | PRML based magnetic servo position demodulator | Physics | 1 | Expired |
| US9045485B2 | ASK 1 inhibiting pyrrolopyrimidine derivatives | Chemistry; Metallurgy | 1 | Active |
| US8697703B2 | Piperazine derivatives for blocking Cav2.2 calcium channels | Chemistry; Metallurgy | 0 | Active |
| US9585886B2 | ASK1 inhibiting pyrrolopyrimidine derivatives | Chemistry; Metallurgy | 0 | Active |
| US9145354B2 | Pharmaceutical compounds | Chemistry; Metallurgy | 0 | Active |
| US8933132B2 | Tricyclic substituted benzenesulfonamide piperazine derivatives as CAV2.2 calcium channel blockers | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.