Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 5493320 | Ink jet printing nozzle array bonded to a polymer ink barrier layer In a print head for ink jet printing a nozzle plate with a nozzle array is gold plated. The gold plated nozzle array is bonded to the polymer ink barrier layer on an electronic chip by a thin layer of tantalum, zirconium, titanium or silicon dioxide. The ... | 02/20/1996 |
| 5079086 | Magnetic recording media The magnetic recording layer of a recording medium contains a film-forming resin, magnetic particles, poly(ethyleneimine), and an amionic surfactant.... | 01/07/1992 |
| 5077267 | Process for making composite high temperature superconductor copper wires A process for forming a composite high temperature superconductor copper wire, said process comprising the steps of (1) directing a submicron sized powder of a superconducting ceramic material through a length of copper tubing to coat the interior surface... | 12/31/1991 |
| 5045608 | Polyimide-poly(phenylquinoxaline) block copolymers Block copolymers of polyimide and poly (phenylquinoxaline) have been synthesized. They are useful, particularly as dielectric layers in thin film multilayer structures. The most preferred embodiments are formed from polyimides which are those from pyromel... | 09/03/1991 |
| 5019481 | Aqueous base developable negative resist compositions An aqueous base developable negative resist composition comprising a phenolic resin, a radio-chemical acid generator and a small molecule which upon irradication and postbake reacts with the phenolic resin to decrease its rate of dissolution.... | 05/28/1991 |
| 4988668 | Ti-Ca-Ba-Cu-D compositions electrically superconducting above 120 degrees K and processes for their preparation Stable, bulk electrical superconductors are prepared by heating mixed metal oxides in the presence of oxygen in a closed vessel in a preheated oven for 1-5 hours at 850°-900° C. The final oxides are in the molar ratio Ti0.6-1.1 Ca2-3 | 01/29/1991 |
| 4981840 | Process for preparing metal-ceramic coatings electrically superconducting above 77 degrees Kappa Substrates are coated with durable, adherent and continuous superconductive coatings by applying thereto a suspension of finely divided metal, finely divided ceramic superconducting above 77° K., and fluorinated polymer in an organic solvent. The resulti... | 01/01/1991 |
| 4970098 | Coatings for hot roll fusers A roll for hot fusing having a coating comprising a cross-linked elastomeric random copolymer of dimethylsiloxane and diphenylsiloxane and three additives, (1) from 40 to 55% by weight of small zinc oxide particles, (2) from 5 to 10% by weight of small gr... | 11/13/1990 |
| 4970551 | Cartridge containing a reciprocating photoconductor ribbon for serial electrophotographic printing A cartridge for electrophotographic printing which contains a reciprocating photoconductor ribbon, a charging station, a developer station, a transfer station and a retractable cleaner blade. In operation, the photoconductor ribbon is directed past the ch... | 11/13/1990 |
| 4948629 | Deposition of diamond films Diamond films are deposited at substrates below temperatures of 400° C. by chemical vapor deposition using a high powered pulsed laser and a vapor which is an aliphatic carboxylic acid or an aromatic carboxylic anhydride.... | 08/14/1990 |
| 4889784 | Organic photoconductors with improved wear An organic photoconductor comprising a charge generation layer and on top thereof a charge transport layer having a higher concentration of charge transport molecules nearer the charge generation layer than in the topmost portion.... | 12/26/1989 |
| 4880959 | Process for interconnecting thin-film electrical circuits Thin-film electrical circuits are interconnected by a process comprising the steps of partially ablating the existing thin-film conductor at the connection point(s) by means of a pulsed laser and depositing a thin-film metal interconnection over the desir... | 11/14/1989 |
| 4874682 | Organic photoconductors with reduced fatigue Fatigue in organic photoconductors in which the charge transport layer is a source of acidic protons is reduced by including in the charge transport layer a small amount of a nonvolatile basic amine soluble in a common solvent with a charge transport mate... | 10/17/1989 |
| 4875124 | Thin film magnetic heads with thermally crosslinked insulation A thin film magnetic head is provided in which the electrical insulation surrounding the conductive coil comprises a photosensitive resin which has been crosslinked by a thermally activated crosslinking agent or promotor. The addition of the thermally act... | 10/17/1989 |
| 4870052 | Tl-Ca-Ba-Cu-O compositions electrically superconducting above 120 degree K and processes for their preparation Stable, bulk electrical superconductors are prepared by heating mixed metal oxides in the presence of oxygen in a closed vessel in a preheated oven for 1-5 hours at 850°-900° C. The final oxides are in the molar ratio Tol0.6-1.1 Ca2-3 | 09/26/1989 |
| 4849501 | Polyimide coating compositions based on meta-dialkyldihydrogen pyromellitate and aromatic diamines A composition for the application of a planar polyimide coating having a glass transition temperature above 300° C. comprises a solution in an anhydrous, aprotic solvent of an aromatic diamine and a dialkyldihydrogen pyromellitate which is more than 90% ... | 07/18/1989 |
| 4800152 | Negative resist compositions Heat stable, negative resist compositions are provided for use, particularly in deep ultraviolet light X-ray and electron beams. The composition comprises an acid generating onium salt photoinitiator, a source of polyfunctional activated aromatic rings an... | 01/24/1989 |
| 4794087 | Circuit writing process Circuit writing on a substrate is achieved by selectively exposing to a laser portion of a very thin film of a medium comprising electrically isolated conducting clusters in a dielectric matrix material. The preferred materials are gold in highly crosslin... | 12/27/1988 |
| 4786441 | Preparation of iodonium and sulfonium triflates An iodonium or sulfonium triflate is prepared by dissolving or slurring a iodonium or sulfonium halide in an organic solvent and reacting it with a trimethylsilyl triflate.... | 11/22/1988 |
| 4787077 | Process for optically storing information using materials having a single phase in both the crystalline state and the amorphous state An optical storage system has an information containing film of a material which has a crystallization temperature between 100° C. and 400° C. and can be switched between the amorphous and the crystalline states. Both the amorphous and crystalline state... | 11/22/1988 |
| 4784447 | Holographic objective mirror for optical storage A holographic mirror is used in an optical storage head to diffract a laser beam perpendicularly to the optical medium and also to focus the beam onto the optical medium. The mirror can also function to cause circularization of a collimated laser beam of ... | 11/15/1988 |
| 4781758 | Ink composition for drop-on-demand ink jet A substantially aqueous composition for drop on demand ink jet printing comprising a fluid vehicle with greater than 50% by weight water, a water soluble dye in the range of 1-10% by weight, a lower alkylene glycol plasticizer in the range of concentratio... | 11/01/1988 |
| 4775608 | Generation of capacitive servo patterns on magnetic storage disks A process for generating a capacitive servo pattern on a magnetic storage disk, comprising the steps of: (1) coating the disk with a solution of noble metal compound to form a film of the compound on the disk, (2) exposing said film to radiation through a... | 10/04/1988 |
| 4770974 | Microlithographic resist containing poly(1,1-dialkylsilazane) A resist composition is made resistant to reactive ion etching by admixing therewith a poly(dialkylsilazane).... | 09/13/1988 |
| 4767723 | Process for making self-aligning thin film transistors A process for making a self-aligned thin film transistor, said process comprising the steps of: (1) providing a gate which comprises a glass substrate, a transparent electrode on top thereof, and a metal electrode on top of said transparent electrode, (2)... | 08/30/1988 |
| 4760013 | Sulfonium salt photoinitiators Alkyldiarylsulfonium salts of 9, 10,-dithiophenoxyanthracene are useful as photoinitiators in resist compositions, such as epoxy resin formulations, particularly using long wavelength light.... | 07/26/1988 |
| 4760565 | High speed track access for optical disks using acousto-optic deflector A process for accessing disk tracks in an optical storage disk using a laser beam passed through an acousto-optic deflector which generates an undeflected beam and at least one deflected beam both of which are focussed on the surface of the disk. The defl... | 07/26/1988 |
| 4733268 | Voltage control bar for electrophotography An electrophotographic apparatus is provided with an electrically conductive voltage control bar between the photoconductor drum or belt and the developer or developer/cleaner roll. The voltage control bar prevents toner filming on said cleaning roll, and... | 03/22/1988 |
| 4731755 | Thermal design for reversible phase change optical storage media Reversible phase change storage material is thermally isolated in a storage medium by means of grooves in the substrate and at least one layer of a thermally conductive dielectric material.... | 03/15/1988 |
| 4710424 | Magnetic disk and method of making same The magnetic disk contains on a disk substrate a magnetic layer comprising a binder, magnetic particles and abrasion-resistant particles, the abrasion-resistant particles being enveloped with a layer intensifying the bond between binder and abrasion-resis... | 12/01/1987 |
| 4701351 | Seeding process for electroless metal deposition A process for depositing and tightly binding noble metal seeds onto a substrate by coating the substrate with a very thin layer of a polymer which complexes with a noble metal compound and contacting the layer of polymer with a noble metal compound which ... | 10/20/1987 |
| 4690838 | Process for enhancing the resistance of a resist image to reactive ion etching and to thermal flow The reactive ion etching and thermal flow resistance of a resist image is enhanced by contacting the resist image with an alkyl metal compound of magnesium or aluminum.... | 09/01/1987 |
| 4657845 | Positive tone oxygen plasma developable photoresist A positive tone photoresist is obtained without a solvent development step. The resist is a polymer containing masked reactive functionality which is imagewise exposed to unmask the functionality then treated with a non-organometallic reagent to remask th... | 04/14/1987 |
| 4645338 | Optical system for focus correction for a lithographic tool An apparatus and process for determining focus correction for a lithographic tool are provided. A periodic surface relief structure containing focus information is illuminated so that diffraction beams are generated. An object is translated orthogonally t... | 02/24/1987 |
| 4643948 | Coatings for ink jet nozzles An ink jet nozzle plate is coated with a film comprising a partially fluorinated alkyl silane and a perfluorinated alkane.... | 02/17/1987 |
| 4640718 | Process for accelerating Pd/Sn seeds for electroless copper plating Pd/Sn seeds for use in electroless copper plating are accelerated by treating them with an alkali metal hydroxide at a pH of about 11.3 and at a temperature above 50° C.... | 02/03/1987 |
| 4619731 | Process for etching via holes in alumina Via holes are etched in an alumina layer using an etchant bath of ethylenediaminetetraacetic acid at a pH above 9.... | 10/28/1986 |
| 4614629 | Rotational compression process for forming liquid crystalline polymers with ultra-high mechanical properties A process for making a polymer with ultra-high mechanical properties by subjecting to compression and rotation in a contained geometry at a viscosity in the range of from 50 to 104 poise an aromatic liquid crystalline copolyester.... | 09/30/1986 |
| 4614116 | Phase sensitive ultrasonic modulation method for the detection of strain-sensitive spectral features A phase-sensitive ultrasonic modulation method for the detection of strain-sensitive spectral features involves the use of an ultrasonic field with well-defined wavefronts and a light beam of spot size less than the ultrasonic wavelength and of linewidth ... | 09/30/1986 |
| 4612210 | Process for planarizing a substrate A surface coating of high glass temperature and superior mechanical properties along with excellent planarization and gap filling is used to coat substrates. The coating comprises a polyamide alkyl ester from a pyromellitic alkyl diester and a para-linked... | 09/16/1986 |
