Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 5489371 | Sensor for electrochemical measurements This invention relates to a sensor for the direct and continuous measurement of the electrochemical properties of compounds in a high resistivity liquid. The sensor has a housing which includes a porous hydrophilic membrane which may be made of a ceramic,... | 02/06/1996 |
| 5304293 | Microsensors for gaseous and vaporous species A sensor for gaseous and vaporous species is disclosed. The sensor comprises an electrically insulated substrate which contains small pores passing completely through it. Electrodes consisting of metallic or semiconductor material are deposited onto the t... | 04/19/1994 |
| 5169599 | Method and apparatus for optically detecting presence of immunological components An optical immunosensing device for detecting the presence of an analyte in a liquid sample is fabricated by coating iron phosphate onto a silicon substrate and then etching the iron phosphate layer to obtain steps of varying thickness. Then, a first mip,... | 12/08/1992 |
| 5161532 | Integral interstitial fluid sensor An integral interstitial fluid sensor for application to the skin of a person or an animal for the detection of chemical components of tissue fluid is disclosed. The fluid sensor comprises a substrate of a porous material for the passage of the interstiti... | 11/10/1992 |
