Famous Patents
Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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| Number | Title | Issue Date |
| 7211012 | Multi-layer softball The present invention relates to softballs that have very low compression, but maintain the traditional COR values of standard urethane core softballs. The present invention comprises a softball having a center core and at least one core or mantle layer to produce a... | 05/01/2007 |
| 7096995 | Polyurethane foam cabinets The invention provides a loudspeaker system having a housing made of a plastic casing and a foam positioned against the interior walls of the casing through a reaction between the foam and the interior wall. The foam increases the stiffness of the walls as well as p... | 08/29/2006 |
| 7083756 | Method for producing a toothbrush A method for efficiently producing injection molded toothbrush handles wherein two or more adjacent cavities in a mold are respectively configured to mold a first portion of a handle and a second portion of a handle, wherein upon injection molding of the first porti... | 08/01/2006 |
| 7066852 | Game ball with improved moisture resistance A game ball having improved resistance to liquid moisture, wherein the game ball includes a water resistant lining and a leather cover with water resistance properties. The water resistance properties of the cover are imparted by the tanning process and the lining i... | 06/27/2006 |
| 6475119 | Deformable ball A therapeutic hand exerciser includes a resilient core and a fabric exterior lining. The core is soft, pliable and smooth when squeezed. The soft smooth feel of a segmented polyurethane fabric, such as LYCRA.RTM., also provides a more pleasurable feel tha... | 11/05/2002 |
| 6379270 | Golf ball In a golf ball comprising a solid core, an intermediate layer, and a cover, the solid core or the cover is provided with a plurality of protrusions penetrating into the intermediate layer. Provided the protrusions are spaced apart a distance X (mm) and ha... | 04/30/2002 |
| 6369125 | Game balls with cover containing post crosslinkable thermoplastic polyurethane and method of making same A game ball having a cover formed from a crosslinkable thermoplastic polyurethane is disclosed. Various types of game balls are described including golf balls and softballs. By selective exposure to radiation, the thermoplastic polyurethane cover is cross... | 04/09/2002 |
| 6348018 | American football supported with air layer An American football includes a ball cover including four elliptical cover pieces sewn edge to edge together, wherein each cover piece comprises an outer elliptical cover skins, an elliptical inner lining for supporting between the outer cover skin, and a... | 02/19/2002 |
| 6267695 | Golf ball The invention provides a golf ball comprising a core and a cover, wherein the cover consists of an outer layer and an inner layer having a lower hardness than the outer layer. The cover inner layer is formed with a plurality of recesses in its outer surfa... | 07/31/2001 |
| 6224513 | Therapeutic squeeze ball A therapeutic hand exerciser includes a resilient core and a fabric exterior lining. The core is soft, pliable and smooth when squeezed. The soft smooth feel of a segmented polyurethane fabric, such as LYCRA.RTM., also provides a more pleasurable feel tha... | 05/01/2001 |
| 5951420 | Safety ball A durable, composite safety baseball or softball for practice or training purposes having a dual layer core comprised of an inner core of closed cell urethane and an outer core layer of relatively open cell urethane and covered with an outer cover of real... | 09/14/1999 |
| 5704858 | Safety baseball A baseball includes a spherical core of foamable material and three layers of foamable material engaged on the spherical core and a cover layer engaged on the three layers. The intermediate layer of the three layers includes a hardness and a density great... | 01/06/1998 |
| 5647590 | Game ball for urban use A game ball having a softer core and abrasion resistant cover is particularly well suited for play on hard pavements and cement in inner city areas. The ball has a polyurethane foam core formed from a mixture of 100 parts polyol and 33-40 parts isocyanate... | 07/15/1997 |
| 5595546 | Golf putting aid A golf putting aid comprising first and second golf balls connected together in an abutting relationship by a threaded connector that extends into holes formed in the first and second golf balls. The first golf ball includes a center formed by a thin wall... | 01/21/1997 |
| 5356941 | Game balls having improved core compositions A game ball core comprising a thermoplastic resin or blend of resins, a chemical blowing agent, a nucleating agent, peroxide crosslinking agent and other minor additives is disclosed. The molded cellular core is sufficiently durable to withstand a synthet... | 10/18/1994 |
| 5350342 | Deformable grip The invention is a semi-resilient exercise grip that has a non-resilient particulate core surrounded by a resilient rubber covering. Within the core there is also a dry lubricant such as talc that allows the particles to move over each other without damag... | 09/27/1994 |
| 5320345 | Game ball with transparent cover A game ball includes an inflatable bladder or a core and a transparent cover over the bladder or core. The bladder or core may include a layer of windings, and the bladder or core is visible through the transparent cover to provide an unusual visual appea... | 06/14/1994 |
| 5123659 | Game ball A game ball is made by rotationally molding a hollow spherical shell from a blend of foamed ionomer resins (Surlyn 9450 and Surlyn 8528) and low density polyethylene resin. The center of the hollow spherical core may be filled with foamed polyurethane, an... | 06/23/1992 |
| 5091265 | Coating compositions for game balls A coating composition for game balls, such as baseballs and softballs, is provided. The coating composition is comprised of a specific film-forming binder system, a fluorescent pigment, at least one compatible solvent and additional components including t... | 02/25/1992 |
| 4944363 | Toy ball A resiliently deformable toy ball which is soft and supple and provides an intriguing relaxing feeling when squeezed, and which possesses a low rebound percentage due to its resliently deformable nature. The ball has a highly plasticized PVC core which is... | 07/31/1990 |
| 4772019 | Game ball A durable, composite safety ball is disclosed which is formed with a soft, resilient, substantially closed-cell plastic foam core. The safety ball, including the cover, has a type A durometer less than about 60 and preferably in the range of about 25 to a... | 09/20/1988 |
| 4660830 | Baseball or softball A game ball for use as a conventionally sized baseball or softball comprises an inner core of a first material characterized by at least high durability; at least one locator pin of the first material extending radially outwardly from and affixed to the i... | 04/28/1987 |
| 4653752 | Game ball A baseball or softball having a size, weight, sound and rebound in accordance with standards set for the game. The ball is formed of a spherical plastic shell covered with a conventional sewn cover. The plastic shell is a thermoplastic consisting of a mix... | 03/31/1987 |
| 4572507 | Game ball A ball, such as a baseball or softball, which includes a thermoplastic resin center, an outer winding and a two-piece cover is disclosed. The core comprises at least 45% of a partially blown copolymer of at least one olefin with at least one unsaturated m... | 02/25/1986 |
| 4529200 | Game ball A game ball and method for making the ball. The game ball is for use as a conventional, standard baseball or softball having the desired size, rebound and sound when hit. The ball includes a conventional preformed core of cork or the like, and a plastic s... | 07/16/1985 |
| 4463951 | Ball The invention provides a ball for a game having a spherical soft polyurethane foam and a surface layer of foamed polyvinyl chloride formed on the surface of the spherical body. The ball is produced by first casting the surface layer in a mold to form a ho... | 08/07/1984 |
| 4337944 | Lighter and softer recreational balls A ball having the general appearance, shape and aerodynamic characteristics of a conventional football when thrown or kicked; but which is softer and lighter allowing for its use in congested areas--it does not travel as far when thrown or kicked--and by ... | 07/06/1982 |
| 3976295 | Game ball A ball is disclosed formed with a spherical core of polyurethane foam covered with a thin winding of cotton yarn and with a hand stitched outer cover; the ball is formed in a mold by providing a polymeric isocyanate with a mixture of water and a polyol cr... | 08/24/1976 |
