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.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7686933 | Method and apparatus for purifying an oil-based fluid An apparatus for electrophoretically removing contaminants from an oil-based drilling fluid includes a housing, a drum, a means for rotating the drum, and a scraper head. The drum is retained within the housing above the housing floor. The oil-based drilling fluid i... | 03/30/2010 |
| 7378012 | Method for reforming lubricating oil used in lubricating an engine with a sliding region A method for reforming a lubricating oil which includes holding stably a container (6) containing a lubricating oil (5) on a stand (4) being insulated from the earth with four high-voltage insulators (3), and applying an electrostatic pot... | 05/27/2008 |
| 6905593 | Method for removing calcium from crude oil A calcium-containing hydrocarbonaceous material is treated with an aqueous mixture, comprising acetate ion and an alkaline material and having a pH in the range of 3.0 to 5.0, in order to extract at least a portion of the calcium from the hydrocarbonaceous material ... | 06/14/2005 |
| 5843301 | Electrodynamic-chemical processing for beneficiation of petroleum residue A process and system for converting petroleum residue ("resid") into a liquid product and a solid product. The resid is first mixed with a solvent having a generally nonpolar molecular character. A strong electric field is then applied to the mixture to a... | 12/01/1998 |
| 5817228 | Method for anodically demetallating refinery feedstreams The invention is a method for demetallating petroleum streams by subjecting a hydrocarbon soluble metals-containing petroleum stream and an aqueous electrolysis medium to a sufficient anodic potential at a pH sufficient to produce a treated petroleum stre... | 10/06/1998 |
| 5746907 | Method to remove metals from residuals A method is provided to remove metals from a residual oil containing an initial amount of a selected metal, the method comprising the steps of: providing a vessel for exposing the residual oil to a DC electric field having a strength of about one kV/inch or gr... | 05/05/1998 |
| 5702588 | Soap fiber extraction process A method of separating soap fibers from the liquid phase component of grease to prepare the fibers for microscopic analysis includes the steps of admixing a sample of the grease with a solvent to remove the liquid phase component from the fibers and provi... | 12/30/1997 |
| 4960524 | Method for soil consolidation A method and apparatus for separating liquid for material of differing permativity is disclosed. The method involves the application of an AC voltage to a material to create an a non-uniform electric field of the same frequency as the applied AC voltage w... | 10/02/1990 |
| 4134799 | Method for selecting a demulsifier for breaking a water-in-oil emulsion A method for selecting a demulsifier for breaking a water-in-oil emulsion employs at least two electrodes to be immersed in a plurality of emulsion samples, each having a different demulsifier added. The current flow between the electrodes is recorded for... | 01/16/1979 |
