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 |
| 7156161 | Lightweight thermal heat transfer apparatus A lightweight thermal heat transfer apparatus, including a core section and a laminate composite section. The core section is substantially similar to a diamond shape. The laminate composite section has a plurality of thermally conductive fibers, which are disposed ... | 01/02/2007 |
| 4515341 | Ingot mould having a hot-top inside the upper part of the mould The ingot mould comprises a hot-top positioned inside the upper part of the mould and comprising an inner wall formed by at least one plate of a material capable of withstanding contact with a molten metal poured into the ingot mould, without being melted... | 05/07/1985 |
| 4290475 | Ingot casting Disclosed is a mold structure for casting large metallic parts such as ingots so as to avoid the formation of the "shrinkage pipe" which normally develops on the exposed top surface of such castings during their solidification. The structure comprises a c... | 09/22/1981 |
