Famous Patents
The ice cream cone was invented at the St. Louis Worlds Fair by Ernest Hamwi in 1904. His waffle booth was next to an ice cream vendor who ran short of dishes. Hamwi rolled a waffle to hold ice cream and the cone was born.
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 |
| 7131288 | Heat exchanger In a heat exchanger (10) for transferring heat from a first fluid to a second fluid, which heat exchanger (10) comprises one or more flow passages (12) for a first fluid, the outer wall (26) of these passages is in heat-transferring conta... | 11/07/2006 |
| 6576205 | Method for reducing the crystallinity of nickel hydroxide powders A process for decreasing the crystallinity of nickel hydroxide by generating and supplying large numbers of heteronuclei into the nickel hydroxide producing reaction system. Nickel sulfate and sodium hydroxide are initially forcefully and intimately combi... | 06/10/2003 |
| 5626692 | Method of making an aluminum-base metal matrix composite The invention provides an aluminum-base composite material. The aluminum-base material contains a uniform distribution of carbide particles and lubricating phase particles such as carbon or graphite. The carbide particles increase hardness for improved we... | 05/06/1997 |
| 5233926 | Adhesive secondary blasting cone A shaped secondary blasting charge including a frustoconical container and a viscous adhesive explosive overpacked into the container. A concave cover accommodates the overloaded explosive which is removed at the blasting site. The container with the expl... | 08/10/1993 |
| 5180423 | Converter and method for top blowing nonferrous metal The invention provides a converter for purifying molten nonferrous material. A converter body having a refractory lined chamber holds the nonferrous material. A gas injector means pierces a lower portion of the chamber for bottom sparging the nonferrous m... | 01/19/1993 |
| 5073252 | Pneumatic size separator for nickle-containing particles A device for separating particles by size having a substantially vertical conduit. The vertical conduit has an open upper end and a closed lower end. A gas supply inlet is located between the upper end and the lower end to supply an upward flow of gas thr... | 12/17/1991 |
| 4944325 | Butterfly valve for erosive fluid streams A butterfly valve having a central cavity larger than the access ports. A disc is disposed within the central cavity to sealingly engage the interior of the valve. A molded elastomeric liner covers the interior of the valve and the disc. By utilizing a ce... | 07/31/1990 |
| 4809775 | I-T-H pipe cutting tool A pipe cutting tool especially adapted to cut the interior of in-the-hole (I-T-H) drill pipe to allow subsequent removal of the pipe above the cut. Due to blasting damage, long sections of I-T-H pipe, otherwise in good condition, cannot be removed because... | 03/07/1989 |
| 4537686 | Cyanide removal from aqueous streams The cyanide content of waste waters containing the same is removed by treatment with sulfur dioxide or an alkali or alkaline earth metal sulfite or bisulfite in the presence of excess oxygen and a metal catalyst which is perferably copper.... | 08/27/1985 |
| 4534935 | Manufacturing of titanium anode substrates Sponge titanium powder is compacted, advantageously by roll compaction to a density in the range of about 60% to 80% of the density of solid titanium metal, thereafter heat treated in vacuum at about 500° C. to 750° C., cooled in vacuum to 300° C. and ... | 08/13/1985 |
| 4514372 | Process of producing cobalt-containing solutions and salts Cobalt salts are produced by dissolving cobalt metal in hydrochloric acid containing a small amount of thiosulfate ions.... | 04/30/1985 |
