Block Engineering, LLC
30Patents
10Active
30Granted
45Portfolio score
Filing activity: Jan 26, 1971 → Oct 28, 2020 · 3 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4022575A | Automatic chemical analyzer | Emerging Cross-Sectional Technologies | 124 | Expired |
| US4166105A | Dye tagged reagent | Emerging Cross-Sectional Technologies | 92 | Expired |
| US3975084A | Particle detecting system | Physics | 66 | Expired |
| US4006360A | Method of discriminating between dyed particles and background fluorescence of the dye | Physics | 60 | Expired |
| US4100416A | Serum fluorescence suppression | Emerging Cross-Sectional Technologies | 59 | Expired |
| US3976862A | Flow stream processor | Physics | 50 | Expired |
| US4146604A | Differential counting of leukocytes and other cells | Emerging Cross-Sectional Technologies | 36 | Expired |
| US4038055A | Gas chromatograph for continuous operation with infrared spectrometer | Physics | 34 | Expired |
| US3991627A | Alignment device for sample containers | Performing Operations; Transporting | 34 | Expired |
| US4169137A | Antigen detecting reagents | Emerging Cross-Sectional Technologies | 33 | Expired |
| US4123236A | Gas chromatograph device | Physics | 20 | Expired |
| US3999855A | Illumination system | Physics | 19 | Expired |
| US4018530A | Fluorescence spectrometry employing excitation of bleaching intensity | Physics | 18 | Expired |
| US4138727A | System for analyzing time-dependent phenomena | Physics | 16 | Expired |
| US8780347B2 | QCL spectroscopy system and applications therefor | Electricity | 14 | Active |
| US8086266B2 | Cell phone based MEMS fourier transform infrared (FTIR) gas sensors | Physics | 14 | Active |
| US4025393A | System for detecting growth in microorganisms | Physics | 14 | Expired |
| US9329085B2 | QCL spectroscopy system and applications therefor | Electricity | 11 | Active |
| US4086652A | Method and apparatus for analyzing a time-dependent phenomenon | Physics | 7 | Expired |
| US4053085A | Dissimilar materials seal for high pressure, high temperature and chemically reactive environments | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US3950875A | Trigger for selectively discharging simultaneously any number of barrels on a multiple-barrelled firearm | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US8587787B2 | Miniature fourier transform spectrometer and method of operation | Emerging Cross-Sectional Technologies | 4 | Active |
| US9983126B2 | Quantum cascade laser (QCL) based gas sensing system and method | Electricity | 3 | Active |
| US7880890B2 | MEMS michelson interferometer and method of fabrication | Emerging Cross-Sectional Technologies | 2 | Active |
| US4037760A | Proportional diluter | Physics | 2 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.