Michael A. Butler
29Patents
11h-index
34Co-inventors
75Inventor score
Filing activity: Nov 21, 1984 → Oct 7, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5757536A | Electrically-programmable diffraction grating | Physics | 166 | Expired |
| US5905571A | Optical apparatus for forming correlation spectrometers and optical processors | Physics | 130 | Expired |
| US5789745A | Ion mobility spectrometer using frequency-domain separation | Electricity | 110 | Expired |
| US5471313A | Method and control system architecture for controlling tone reproduction in a printing device | Physics | 58 | Expired |
| US5119132A | Densitometer and circuitry with improved measuring capabilities of marking particle density on a photoreceptor | Physics | 40 | Expired |
| US5836203A | Magnetically excited flexural plate wave apparatus | Physics | 36 | Expired |
| US4950905A | Colored toner optical developability sensor with improved sensing latitude | Physics | 35 | Expired |
| US5162874A | Electrophotographic machine having a method and apparatus for measuring toner density by using diffuse electromagnetic energy | Physics | 35 | Expired |
| US5053822A | Densitometer for measuring marking particle density on a photoreceptor having a compensation ratio which adjusts for changing environmental conditions and variability between machines | Physics | 22 | Expired |
| US4841778A | Optical fiber sensor technique for strain measurement | Physics | 14 | Expired |
| US5267179A | Ferroelectric optical image comparator | Physics | 12 | Expired |
| US6076406A | Integrated sensing platform and method for improved quantitative and selective monitoring of chemical analytes in both liquid and gas phase | Physics | 11 | Expired |
| US6822929B1 | Micro acoustic spectrum analyzer | Electricity | 9 | Expired |
| US7095295B1 | Multi-tunable microelectromechanical system (MEMS) resonators | Electricity | 8 | Expired |
| US7046410B2 | Actuatable diffractive optical processor | Performing Operations; Transporting | 7 | Expired |
| US9782696B2 | Method for maximizing uniform effluent flow through a waste water treatment system | Emerging Cross-Sectional Technologies | 5 | Active |
| US7791027B2 | Apparatus and method providing a hand-held spectrometer | Physics | 5 | Active |
| US7505641B1 | Optical biosensor incorporating wavelength encoding of multiple unlabeled analytes | Physics | 4 | Active |
| US4641037A | Organic metal neutron detector | Physics | 4 | Expired |
| US5871698A | Chemical sensing flow probe | Emerging Cross-Sectional Technologies | 4 | Expired |
| US7927749B2 | Microbial fuel cell and method | Emerging Cross-Sectional Technologies | 3 | Active |
| US9744482B2 | Screen decanter for screening solids from waste water | Chemistry; Metallurgy | 2 | Active |
| US6985308B1 | Telecommunications optical processor | Electricity | 2 | Expired |
| US9643106B2 | Screen decanter for removing solids from wastewater | Chemistry; Metallurgy | 2 | Active |
| US7807303B2 | Microbial fuel cell and method | Emerging Cross-Sectional Technologies | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.