Sigma Instruments Holdings, LLC
44Patents
7Active
44Granted
41Portfolio score
Filing activity: Jun 26, 1972 → Jan 17, 2019 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US9782324B2 | System and method for treating skin and underlying tissues for improved health, function and/or appearance | Human Necessities | 57 | Active |
| US5124642A | Power line post insulator with dual inductor current sensor | Physics | 51 | Expired |
| US4763034A | Magnetically enhanced stepping motor | Electricity | 39 | Expired |
| US4255696A | Synchronous motor system | Electricity | 37 | Expired |
| US4271384A | Synchronous motor drive | Emerging Cross-Sectional Technologies | 34 | Expired |
| US4712028A | Magnetically assisted stepping motor | Electricity | 32 | Expired |
| US6539328B1 | Device and process for measurement and treatment of spinal mobility | Human Necessities | 28 | Expired |
| US4984124A | Faulted current indicator with inrush restraint | Electricity | 27 | Expired |
| US4025810A | Low noise synchronous motors | Electricity | 25 | Expired |
| US5029039A | Current adaptive fault indicator | Electricity | 24 | Expired |
| US4423343A | Synchronous motor system | Electricity | 24 | Expired |
| US4112319A | Synchronous motor with heterogeneously pitched teeth | Electricity | 23 | Expired |
| USD530019S1 | Personal massager | General | 19 | Expired |
| US4683472A | Signal reading system such as for remote reading of meters | Physics | 18 | Expired |
| US3956650A | Laminar-rotor synchronous inductor motor | Electricity | 16 | Expired |
| US4728830A | Electric motor with magnetic enhancement | Electricity | 16 | Expired |
| US4700123A | Power distribution systems and means for control thereof | Physics | 13 | Expired |
| US4782287A | Watt-hour meter | Physics | 11 | Expired |
| US5136456A | Faulted current indicator with protection against temporary overloads and transients | Electricity | 11 | Expired |
| US5045778A | Fault indicator with inrush restraint | Electricity | 11 | Expired |
| US4163971A | Systems for displaying analog values | Physics | 10 | Expired |
| US5003426A | Faulted current indicators and inrush restraints therefor | Electricity | 10 | Expired |
| US4272712A | Phase locked loop control system | Emerging Cross-Sectional Technologies | 10 | Expired |
| US9861547B2 | Systems and methods for preventing, managing and/or treating peripheral neuropathy, peripheral vascular disease, erectile dysfunction, urinary incontinence, cellulite and other conditions | Human Necessities | 9 | Active |
| USD711900S1 | Display screen with graphical user interface for a veterinary medical apparatus | General | 9 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.