Did You Know...
...that on Dec. 15, 1836, the Patent Office was completely destroyed by fire? Lost were some 7,000 models, 9,000 drawings, and 230 books plus all records of patent applications and grants.
PatentStorm News
Make the Most of PatentStorm
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest patents by subscribing to an RSS feed.
Got questions? Ask a Patent Expert!
Registered users: Manage your profile, comments and alerts.
| Number | Title | Issue Date |
| 5631945 | Slit radiography apparatus A slit radiography apparatus is provided with an absorption device comprising electrically controllable piezoelectric tongues. Upper and/or lower deflections of the tongues are limited to a maximum by trips outside the X-ray fan beam. More than one strip ... | 05/20/1997 |
| 5210782 | Method and apparatus for split radiography In an equalization radiography device an X-ray fan beam (3,4) is used to scan a body (7) under examination. The X-ray fan beam comprises a number of adjacent sectors. A modulator device (5) comprising a number of controllable beam sector modulators is pre... | 05/11/1993 |
| 5044007 | Improved slit radiography assembly having an x-ray source of variable hardness synchronized to varying slit height An apparatus for slit radiography is provided with a slot diaphragm to form a fan-shaped X-ray beam with which a body can be scanned. Controllable attenuating elements interact with the slit diaphragm to influence sectors of the fan-shaped X-ray beam. The... | 08/27/1991 |
| 5042303 | Apparatus for ultrasound detection An ultrasound transducer generates a received signal in response to a reflected ultrasound signal. Polarity and phase information of the reflected ultrasound signal can be obtained by time-selectively amplifying the received signal with a specific gain fu... | 08/27/1991 |
| 4996701 | Method and device for slit radiography In a method for slit radiography a fan-shaped X-ray beam scans a body to form an X-ray shadow image. The fan-shaped beam is formed by a number of sectors situated next to each other. For each sector the transmitted X-ray radiation is controlled instantane... | 02/26/1991 |
| 4916723 | Method for slit radiography In a method for slit radiography a fan-shaped X-ray beam scans a body to form an X-ray shadow image. The fan-shaped beam is formed by a number of sectors situated next to each other. For each sector the transmitted X-ray radiation is controlled instantane... | 04/10/1990 |
| 4897879 | Multi-way loudspeaker system A multi-way loudspeaker system comprising at least two series connected loudspeakers (ZH, ZL) connected to a common signal input (1, 2) for reproducing different parts of the full frequency spectrum of an audio signal applied to the ... | 01/30/1990 |
| 4856040 | Apparatus and method for slit radiography with different x-ray energies An apparatus and method for slit radiography, in which a body to be irradiated is scanned at least twice by means of a planar, fan X-ray beam emitted from an X-ray source (1) via a slit diaphragm (2), the hardness of which beam increases with each next sc... | 08/08/1989 |
| 4772953 | Method for processing picture information having a large dynamic range with a television camera tube, and also a device for applying the method The blooming effect in pictures of a television camera tube (such as a vidicon, an orthicon or an isocon) is counteracted by setting the cathode potential to a first standard value during one scan of the scanning electron beam and to a second value during... | 09/20/1988 |
| 4665539 | Method and apparatus for forming tomographic images A method of forming tomographic images in cross-sectional tomography, in which a body is irradiated by a flat X-ray beam at different angles for successively forming a plurality of profiles on an X-ray screen or an X-ray detector, and a tomogram is constr... | 05/12/1987 |
| 4637150 | Light box for providing a background illumination having brightness values locally adjusted to the density of a transparency to be viewed by means of the light box A device for directly viewing an image on a film transparency, in which the illuminating light source is controlled on the basis of discrete information elements written into and stored in a two-dimensional memory during a preliminary image brightness sca... | 01/20/1987 |
| 4628360 | Method and apparatus for determining the image transfer quality of an imaging system A method of, and apparatus for, determining the image transfer quality of an imaging system on the basis of the signal-to-noise ratio. A reference pattern comprising at least two different portions is presented to an input of the system. One portion provi... | 12/09/1986 |
| 4319274 | Method of recording image information on the target of a scan converter tube A method and apparatus for recording and superimposing image information on the target of a scan converter tube. The image information is supplied in the form of an electric video signal by means whereof the electron beam projected from the cathode of the... | 03/09/1982 |
| 4290112 | Method and apparatus for electro-optically convoluting a one-dimensional signal There is disclosed a method and apparatus for convoluting a signal representing a profile formed during X-ray tomography and a filter function wherein a one-dimensional image of the signal is expanded in a direction transverse to the line by means of an o... | 09/15/1981 |
| 4191890 | Synthetic aperture scanner for decoding a coded image produced by penetrating radiation, such as X-rays A system for decoding a coded aperture image of an object exposed to short-wave radiation from a plurality of point sources positioned in space in accordance with a given distribution. The coded aperture image is displayed by a cathode ray tube having its... | 03/04/1980 |
| 4173720 | Method and apparatus for image construction A tomogram is constructed from a plurality of profiles by means of back projection, the effect of the point spread function being eliminated by analog convolution with a suitable one- or two-dimensional function.... | 11/06/1979 |