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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 |
| 7392575 | Method and machine for producing a nonwoven fabric with reduction of displacement speed of the compacted mat The invention concerns a machine for producing a nonwoven fabric comprising a conveyor for transmitting a mat to means designed to compact same in thickness and means designed to reduce the speed of the web while it is being compacted, by the compacting means, there... | 07/01/2008 |
| RE38769 | Air bag fabric possessing improved packed volume and stable air permeability A fabric for use in an air bag is provided. The fabric of the invention is produced by mechanically compressing a preliminary fabric constructed substantially of synthetic yarn such that the packed volume per unit area of the compressed fabric is less than the packe... | 08/09/2005 |
| 6750166 | Method for producing a non-woven fibre fabric Disclosed is a method for producing a non-woven fiber fabric comprising a plurality of perforated structures extending along the entire cross-section of said fabric. The inventive method consists of the following steps: in a first step, the matted fibers are placed ... | 06/15/2004 |
| 6673204 | Method and apparatus for manufacturing non-woven fabric Disclosed are a method and an apparatus for manufacturing a non-woven fabric, in which a predetermined pattern of a forming body is transferred to a non-woven fabric immediately after or simultaneously with its formation by urging the non-woven fabric ont... | 01/06/2004 |
| 6634069 | Apparatus for feeding a fiber fleece In an apparatus for feeding a fiber fleece web to a needling machine, a compacting means is arranged between a pre-compressor and a supply roller pair, said compacting means having rollers provided with teeth at their circumference. These rollers compress... | 10/21/2003 |
| 6625853 | Method of compressing fibrous bodies A method of compressing fibrous bodies which are held in place on a perforated support by means of negative pressure. Each fibrous body to be compressed is arranged on a first support that includes parts with and without perforations. A first compression ... | 09/30/2003 |
| 6376396 | Soundproofing material and the use thereof A soundproofing material made of nonwoven materials containing thermoplastic fibers for the acoustic frequency range of 100 to 5000 Hz is characterized in that the nonwoven material is permanently compacted to a specific flow resistance of RS=800-1400 Ns/... | 04/23/2002 |
| 6327759 | Air bag fabric possessing improved packed volume and stable air permeability A fabric for use in an air bag is provided. The fabric of the invention is produced by mechanically compressing a preliminary fabric constructed substantially of synthetic yarn such that the packed volume per unit area of the compressed fabric is less tha... | 12/11/2001 |
| 5942179 | Porous film A method of producing a porous film comprises subjecting a fibrous material comprised of fibers of a film forming material to conditions of heat and pressure to covert the fibrous material to a porous film. The method allows the production of film materia... | 08/24/1999 |
| 5909884 | Process and apparatus for continuous production of length portions from a strand of fluid-absorbing material Process for the production of longitudinally extending pressed absorption bodies from an endless nonwoven web which is transported continuously in the direction of advance by pressing elements drivable in the direction of rotation and belonging to a press... | 06/08/1999 |
| 5783505 | Compostable and biodegradable compositions of a blend of natural cellulosic and thermoplastic biodegradable fibers Compostable and biodegradable compositions of a blend of natural cellulosic and thermoplastic biodegradable fibers are disclosed. Typically the compositions include cotton and cellulose acetate. A process for the manufacture of a nonwoven composition whic... | 07/21/1998 |
| 5718022 | Method for making a nonwoven fabric lap using pressurized water jets, and apparatus therefore A web of non woven textile fabric is fed on a porous belt into the nip between the belt and a rotating porous drum to compress the web within the nip. A curtain of water is passed through the web while it is in the nip into the drum and a vacuum is drawn ... | 02/17/1998 |
| 5599603 | Manufacture of carbon fibre preform In a method of making a carbon fibre preform such as for use in the manufacture of a friction disc a compressible body of carbon fibre or carbon fibre precursor material is acted upon by compressing means to compress the body to a required thickness and t... | 02/04/1997 |
| 5569528 | Non-woven layer consisting substantially of short polyolefin fibers The invention relates to a non-woven layer that consists substantially of short polyolefin fibers the nonwoven layer being a felt with in the plane of the layer substantially randomly oriented fibers with a length of 40-100 mm, a tensile strength of at le... | 10/29/1996 |
| 5296278 | Gastight woven fabric sheet for air bags and a process for producing same A gastight woven fabric sheet for air bags having no risk of burning a person due to formation of gas-permeable perforations and gas flowing out when the air bag is inflated, a high burst strength due to a reinforcing effect by adhesion, and a satisfactor... | 03/22/1994 |
| 5144731 | Automatic lap piecing method and an apparatus for carrying out the same An automatic lap piecing method of piecing two lap sheets (2, 4) together, comprising the steps of holding the leading end (3) of the lap sheet (2) of a full lap (1) by a tubular member (6) by suction created in the suction opening (7) of the tubular memb... | 09/08/1992 |
| 4701365 | Formable nonwoven sheet Disclosed is a formable nonwoven sheet of filaments of a polyester group and having superior forming properties, i.e., a forming processability and a shape retaining property and utilizability, i.e., physical properties and properties during use, produced... | 10/20/1987 |
| 4454189 | Sheet of polyphenylene sulfide filaments and process for producing the same This invention relates to a sheet which is formed by randomly dispersing and accumulating polyphenylene sulfide (PPS) filaments and to a process for producing the same. The filaments drawn by a high-velocity air stream are formed directly into a sheet. Th... | 06/12/1984 |
| 4249288 | Apparatus for treating fabric by beating while fabric is in the spread or flattened state Apparatus for treating fabric by beating while the fabric is in the spread or flattened state, particularly for use in a process and system for washing the fabric. The apparatus has a large number of beating bars arranged in groups each of which being ada... | 02/10/1981 |
| 4196562 | Methods of making feminine hygienic pads with anterior leading edges Methods of making feminine hygienic pads from non-layered and layered material by use of folding, pressure molding and various methods of bonding to create a long geometric form with an anterior leading panel of narrow thickness and a thicker posterior un... | 04/08/1980 |
| 4010056 | Process for continuously bonding staple fibers into an essentially non-twisted yarn A process for continuously bonding staple fibers into an essentially non-twisted yarn comprising the steps of introducing into a fiber arrangement composed of staple fibers an excess of a liquid containing an adhesive in distributed form, squeezing excess... | 03/01/1977 |
| 3971669 | Carbon fiber composites Disclosed is a method of producing a carbon fiber felt which includes the steps of preparing a substantially unidirectional array of continuous carbonizable filaments in oxidized state, cross-laying other such filaments on one side of said array in a stat... | 07/27/1976 |
| 3966519 | Method of bonding fibrous webs and resulting products Fibrous webs are bonded by passing through a nip comprising an anvil and a hammer vibrating at high frequencies in the presence of uncombined liquid. The liquid is moved within the web causing rearrangement and entanglement of the fibers resulting in impr... | 06/29/1976 |
| 3959054 | Process for the production of textile fiber fleeces reinforced with expanded netting A process is disclosed in which a layer of textile fibers is applied to an expanded net formed from foils and consisting of two components, one of which is superimposed upon the other and one of which has a softening temperature substantially different fr... | 05/25/1976 |
