Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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 |
| 8181968 | Piston ring A piston ring includes a piston ring body and a surface coating film formed on at least one of upper and lower surfaces of the piston ring body. The surface coating film comprises a heat-resistant resin and a metal powder contained in the heat-resistant resin, and a... | 05/22/2012 |
| 7510196 | Oil ring for internal combustion engine An oil ring for an internal combustion engine capable of securing an area of an oil-passing hole without deteriorating the strength of the oil ring. To achieve this the oil ring is provided with an oil-passing hole including: two arc portions disposed at both ends i... | 03/31/2009 |
| 7166255 | Method for manufacturing a cam The temporary compacting of the powder for use in sintering is carried out, the temporary sintering is carried out, the main compacting is carried out, the main sintering is carried out, and the thickness of the radius direction of the base part of the cam before th... | 01/23/2007 |
| 7153337 | Porous metal structure body and method for manufacturing the same The object of the invention is to provide a porous metal structure body suitable for reinforcing a light metal alloy member such as an aluminum alloy member. A mixed powder containing a metallic powder is filled in a mold, and is molded into a shape having a single ... | 12/26/2006 |
| 7089902 | Sintered alloy valve seat and method for manufacturing the same A valve seat, press-fitted into a cylinder head of an internal combustion engine, containing an iron-based sintered alloy, includes a valve-seating section and a head-seating section. The valve-seating section and the head-seating section are monolithically formed b... | 08/15/2006 |
| 7059290 | Cylinder liner with its inner peripheral surface formed with surface treatment layer, and method for machining to the surface treatment layer A cylinder liner for use in an internal combustion engine has an inner peripheral surface at which a surface treatment layer is formed upon water vapor treatment. The surface treatment layer has a surface configuration capable of providing excellent lubrication oil ... | 06/13/2006 |
| 7044472 | Combined steel oil control ring A combined steel oil control ring is provided which has steel side rails and a steel spacer expander. The spacer expander includes ear portions for contacting the side rails. The ear portions are substantially equally spaced with respect to each other along the inte... | 05/16/2006 |
| 7014677 | Iron based sintered body excellent in enveloped casting property in light metal alloy and method for producing the same The object of the invention is to provide an iron based sintered body suitable for being enveloped in light metal alloy such as an aluminum alloy by casting, and a method for producing the same. A mixed powder is prepared by mixing an iron based powder, a copper pow... | 03/21/2006 |
| 6852008 | Method and apparatus for discharging works from a centerless grinder A method and apparatus for discharging work product from a device wherein a roller which is biased to push against the top of the work product cooperates with a stopper which engages the surface of the work product for displacing the work product, one-by-one from th... | 02/08/2005 |
| 6726218 | Compression piston ring for use in internal combustion engine A compression piston ring capable of reducing excessive surface pressure at a gap and adjacent portion thereto during engine operation, and capable of being produced at a low cost. The compression piston ring has generally circular shape without any notched portion.... | 04/27/2004 |
| 6698763 | Piston ring A piston ring having a stainless steel base material, the base material having an upper surface, a lower surface, an inner circumferential surface and an outer circumferential surface, the surfaces each having a nitride layer formed thereon, the nitride l... | 03/02/2004 |
| 6682078 | Ring groove for oil ring with coil expander of piston A ring groove for a two-piece oil ring of a piston is provided that has ring body equipped with a coil expander, wherein the ring body has an upper outer surface and a lower outer surface, both orthogonal to the axial direction of the piston. The ring gro... | 01/27/2004 |
| 6553957 | Combination of cylinder liner and piston ring of internal combustion engine A cylinder liner and a piston ring adapted to be combined therewith in an internal combustion engine are provided that have excellent abrasion resistance, where iron oxide film is formed at least on a part of the inner circumferential surface of the cylin... | 04/29/2003 |
| 6547251 | Ring groove for oil ring with coil expander of piston A ring groove for a two-piece oil ring of a piston is provided that has ring body equipped with a coil expander, wherein the ring body has an upper outer surface and a lower outer surface, both orthogonal to the axial direction of the piston. The ring gro... | 04/15/2003 |
| 6494461 | Sliding member An improved sliding member is provided that has a sliding surface and a deposition layer formed on the sliding surface utilizing an ion-plating method, wherein the deposition layer is composed mainly of chrome nitride, including CrN. The CrN of the chrome... | 12/17/2002 |
| 6270081 | Combination of piston ring for use in internal combustion engine A piston ring combination including at least one compression ring and at least one oil ring. If a plurality of compression rings are provided, an outer peripheral surface of at least a top ring is formed with a first ion plating layer. The oil ring has a ... | 08/07/2001 |
| 6267384 | Thin 3-piece oil ring An improved thin 3-piece oil ring 1 of an axial width not greater than 2 mm, is provided that has a corrugated spacer expander 2 of a circumferentially successive, substantially U-shaped configuration, and circular, upper and lower side rails 3, 4 holding... | 07/31/2001 |
| 6213474 | Piston ring and combination of compression rings According to an aspect of the present invention, a piston ring for use in internal combustion engines is provided that is made of matensite-based stainless steel material containing C of not less than 0.4 and not more than 0.8 weight percent, Si of not le... | 04/10/2001 |
