Chemetron
82Patents
0Active
82Granted
39Portfolio score
Filing activity: Oct 25, 1972 → Feb 4, 1991
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD250131S | Breathing mask | General | 262 | Expired |
| US4098853A | Humidifier and automatic control system therefor | Emerging Cross-Sectional Technologies | 142 | Expired |
| US4028444A | Humidifier and automatic control system therefor | Emerging Cross-Sectional Technologies | 118 | Expired |
| USD250047S | Breathing mask | General | 96 | Expired |
| US4075475A | Programmed thermal degradation-mass spectrometry analysis method facilitating identification of a biological specimen | Electricity | 85 | Expired |
| US4280126A | Liquid level detector | Physics | 51 | Expired |
| US4069147A | Waste water treatment with oxygen | Emerging Cross-Sectional Technologies | 46 | Expired |
| US4009359A | Method and apparatus for controlling microwave ovens | Electricity | 42 | Expired |
| US4126177A | Dual scraped surface heat exchanger | Emerging Cross-Sectional Technologies | 40 | Expired |
| US4182599A | Volume-rate respirator system and method | Human Necessities | 36 | Expired |
| US4282420A | Welding electrode | Performing Operations; Transporting | 30 | Expired |
| US4025001A | Process and apparatus for the mechanical separation of a combination of meats and bone | Human Necessities | 28 | Expired |
| US4069980A | Process and apparatus for mechanical separation of a combination of meat and bone into useful fractions | Human Necessities | 26 | Expired |
| US4122343A | Method to generate correlative data from various products of thermal degradation of biological specimens | Physics | 24 | Expired |
| US3952421A | Dielectric heating arrangement for drying a continuously moving web of material | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US4096858A | Volume-rate respirator system and method | Human Necessities | 20 | Expired |
| US3936626A | Method of heating comestibles | Electricity | 20 | Expired |
| US4226147A | Slice control circuit for a slicing machine | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4172073A | Method for the preparation of water-soluble keratinaceous protein using saturated steam and water | Chemistry; Metallurgy | 17 | Expired |
| US4990442A | Assay for an analyte on a solid porous support | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4036477A | Mixer | Performing Operations; Transporting | 16 | Expired |
| US4185352A | Scraped-surface apparatus | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US4073464A | Cylinder valve for gas fire extinguishing system | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US3987267A | Arrangement for simultaneously heating a plurality of comestible items | Electricity | 14 | Expired |
| US4063283A | Automatic envelope measuring system | Physics | 14 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.