Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 4547608 | Methane conversion using a silica/magnesia support An improved method for converting methane to higher hydrocarbon products by contacting a gas comprising methane with a contact agent at a selected temperature, the agent comprising a reducible metal oxide, a support of at least two oxides, and an alkali m... | 10/15/1985 |
| 4547272 | Method and apparatus for production of a metal from metallic oxide ore using a composite anode An anode of a mixture of reducing agent and metal oxide particulates is inserted into an electrolytic solvent bath under compression. In forming the particulate anode, the materials of construction are selected such that there is a minimum number of parti... | 10/15/1985 |
| 4544787 | Preparative process for supports An improved process for the production of a contact agent comprising digesting a reducible oxide of at least one metal, the oxide of which forms a reduced metal oxide, and a support in the presence of a silicon component, drying the precipitate of the red... | 10/01/1985 |
| 4544786 | Methane conversion using a magnesia/silica support An improved method for converting methane to higher hydrocarbon products by contacting a gas comprising methane with a contact agent at a selected temperature, the agent comprising a reducibile metal oxide, a support of at least two oxides, and an alkali ... | 10/01/1985 |
| 4543245 | Process for controlling temperature of a Claus sulfur unit thermal reactor A system is disclosed for controlling the environment and temperature in the initial thermal reaction zone of an at least two-zone Claus thermal unit by means of control signals. Both a feed-back control and a feed-forward control are disclosed.... | 09/24/1985 |
| 4533086 | Process for grinding graphite Disclosed is a process for grinding graphite comprising: (1) forming a mixture of graphite and a graphite grinding aid; (2) grinding the mixture of graphite and graphite grinding aid to reduce the size of the graphite; (3) forming an aqueous slurry of the graphite ... | 08/06/1985 |
| 4522937 | Preparative process for alkaline earth metal, aluminum-containing spinels An improved process for the production of alkaline earth, aluminum-containing spinel compositions, preferably magnesium, aluminum-containing spinel compositions and at least one additional metal component, comprises combining alkaline earth metal, aluminu... | 06/11/1985 |
| 4513603 | System for measuring crush properties of a catalyst A system for measuring crush properties of a catalyst bed includes a catalyst bed container which includes at least one deformable wall around and adjacent to a catalyst bed. The catalyst bed container is enclosed within a pressure vessel. The pressure ve... | 04/30/1985 |
| 4498998 | Stabilization of hydrocracked oils against UV-light degradation with certain dihydroxy components Hydrocracked lubricating oils are effectively stabilized against deterioration caused by light by the inclusion of at least one of certain dihydroxy components. Such component, e.g., 3,5-di-tert-butyl catechol and 4,6-di-tert-butyl resorcinol, provide out... | 02/12/1985 |
| 4496533 | Process for purifying graphite A process for purifying graphite comprising: (1) comminuting graphite containing mineral matter to liberate at least a portion of the graphite particles from the mineral matter; (2) mixing the comminuted graphite particles containing mineral matter with water ... | 01/29/1985 |
| 4495305 | Catalyst for conversion of hydrocarbons An improved process for converting hydrocarbons using a catalyst which is periodically regenerated to remove carbonaceous deposits, the catalyst being comprised of a mixture containing, as a major component, solid particles capable of promoting hydrocarbo... | 01/22/1985 |
| 4495304 | Catalyst for conversion of hydrocarbons An improved process for converting hydrocarbons using a catalyst which is periodically regenerated to remove carbonaceous deposits, the catalyst being comprised of a mixture containing, as a major component, solid particles capable of promoting hydrocarbo... | 01/22/1985 |
| 4492678 | Preparative process for alkaline earth metal, aluminum-containing spinels and their use for reducing sulfur oxide content in gases An improved process for the production of alkaline earth, aluminum-containing spinel compositions, preferably magnesium, aluminum-containing spinel compositions and preferably further comprising at least one additional metal component, comprises combining... | 01/08/1985 |
| 4492677 | Preparative process for alkaline earth metal, aluminum-containing spinels and their use for reducing the sulfur oxide content of gases An improved process for the production of alkaline earth, aluminum-containing spinel compositions, preferably magnesium, aluminum-containing spinel compositions and preferably further comprising at least one additional metal component, comprises combining... | 01/08/1985 |
| 4486207 | Apparatus for reducing attrition of particulate matter in a chemical conversion process An apparatus for separating solid particles from vapor is disclosed. The apparatus includes a novel inlet system, a novel particle outlet system and a chamber having novel dimensional relationships which result in an apparatus that separates solid particl... | 12/04/1984 |
| 4483762 | Hydrocarbon conversion process using molybdenum catalyst A hydrocarbon hydroconversion process is disclosed which comprises: combining the chargestock and a minor, effective amount of at least one molybdenum compound prepared by a method which comprises interacting molybdenum metal with at least one peroxy compound ... | 11/20/1984 |
| 4476245 | Preparative process for alkaline earth metal, aluminum-containing spinels An improved process for the production of alkaline earth, aluminum-containing spinel compositions, preferably magnesium, aluminum-containing spinel compositions and preferably further comprising at least one additional metal component, comprises combining... | 10/09/1984 |
| 4472532 | Preparative process for alkaline earth metal, aluminum-containing spinels An improved process for the production of alkaline earth, aluminum-containing spinel compositions, preferably magnesium, aluminum-containing spinel compositions and preferably further comprising at least one additional metal component, comprises combining... | 09/18/1984 |
| 4472267 | Catalyst and process for conversion of hydrocarbons An improved process for converting hydrocarbons using a catalyst which is periodically regenerated to remove carbonaceous deposits, the catalyst being comprised of a mixture containing, as a major component, solid particles capable of promoting hydrocarbo... | 09/18/1984 |
| 4471070 | Preparative process for alkaline earth metal, aluminum-containing spinels An improved process for the production of alkaline earth, aluminum-containing spinel compositions, preferably magnesium, aluminum-containing spinel compositions and preferably further comprising at least one additional metal component, comprises adding a ... | 09/11/1984 |
| 4469589 | Catalyst and process for conversion of hydrocarbons An improved process for converting hydrocarbons using a catalyst which is periodically regenerated to remove carbonaceous deposits, the catalyst being comprised of a mixture containing, as a major component, solid particles capable of promoting hydrocarbo... | 09/04/1984 |
| 4466883 | Needle coke process and product A process for the production of an improved grade of needle coke employing as a feedstock selected proportions of a pyrolysis furnace oil together with a hydrodesulfurized blend of a clarified oil and a lubricating oil extract.... | 08/21/1984 |
| 4464249 | Plural stage reforming with catalysts having a skewed distribution of a platinum-group metal and rhenium A process for reforming naphthene and paraffin-containing hydrocarbon feeds to increase their aromatic content is disclosed which involves the use of a series of reaction zones containing a supported platinum-group metal catalyst and a supported rhenium c... | 08/07/1984 |
| 4453400 | Leak detector An apparatus for detecting small changes in the location of a float, has, in combination, a signal generator for emitting a signal having a characteristic, a detector for detecting a modulated signal by producing a response signal directly related to the ... | 06/12/1984 |
| 4448585 | Process for forming stable coal-oil mixtures A process for forming a coal-oil mixture fuel slurry of enhanced stability comprising the steps of: (1) contacting an aqueous slurry of coal particles containing ash and iron pyrite mineral matter with a promoting amount of at least one conditioning agent... | 05/15/1984 |
| 4448584 | Process for removing sulfur from coal A process for reducing the sulfur and ash content of coal comprising the steps of: (1) contacting coal particles containing ash and iron pyrite mineral matter with a promoting amount of at least one conditioning agent capable of modifying or altering the ... | 05/15/1984 |
| 4438069 | System for temperature control of a Claus sulfur unit thermal reactor A system is disclosed for controlling the environment and temperature in the initial thermal reaction zone of an at least two-zone Claus thermal unit by means of control signals. Both a feed-back control and a feed-forward control are disclosed.... | 03/20/1984 |
| 4434064 | Graphite dispersion Disclosed is a method for stabilizing a graphite in-oil-dispersion by means of a fracture induced oxidation of graphite particles to produce a composition suitable as a constituent of a lubricating oil composition. The oxygen content of the graphite particles ... | 02/28/1984 |
| 4427563 | Stabilization of hydrocracked oils with certain dihydroxy diphenyl oxidation stabilizers Hydrocracked lubricating oils are effectively stabilized against deterioration caused by light by the inclusion of at least one of certain dihydroxy-diphenyl components. Such components, e.g., 4,4'-bis(2,6-di-tertiary butyl phenol), provide outstanding in... | 01/24/1984 |
| 4427305 | Analyzer for distillable materials Disclosed is an analyzer for determining volatile composition changes of a distillable material which comprises: (a) a first device for causing at least a portion of said material to be at a temperature and at a pressure so that a difference in temperatur... | 01/24/1984 |
| 4420966 | Method for determining solids or liquids in vapor A method for measuring changes in the amount of solids or liquids entrained in vapor in a container includes introducing a first vapor purge stream into a first sensor, introducing a second vapor purge stream into a second sensor located at a different le... | 12/20/1983 |
| 4419893 | Method for determining specific gravity of a liquid A method for determining the specific gravity of a liquid includes introducing a purge stream of a reference liquid into a column and introducing a first vapor purge stream into a first sensor located below the level of the reference liquid. Then a second... | 12/13/1983 |
| 4417991 | Graphited gear oils Disclosed is a graphited gear oil containing extreme pressure additives, which significantly overcomes the increased tendency of graphite-containing compositions to thicken in use.... | 11/29/1983 |
| 4416788 | Metal cutting oil and method for using same An improved transparent lubricating oil composition, e.g., useful as a high severity metal cutting oil, comprises a major amount of oil of lubricating viscosity; a minor, effective amount of at least one sulfur-containing compound; and a minor, effective ... | 11/22/1983 |
| 4411804 | Solid particles containing lubricating oil composition An improved lubricating oil composition comprising a major amount by weight of oil of lubricating viscosity, a minor amount by weight of solid particles effective to improve the lubricating properties of the composition; and a minor amount of certain disp... | 10/25/1983 |
| 4400975 | Apparatus for monitoring liquid flow rates An apparatus adapted to monitor the flow rate of a liquid comprising a conduit through which the liquid is caused to flow; a heater adapted to supply heat at a substantially constant rate to the liquid in the conduit; a temperature control device adapted ... | 08/30/1983 |
| 4397183 | Apparatus for detecting level changes in distance An apparatus useful in detecting changes in distance comprises: a signal emitter capable of emitting a substantially constant signal; a signal reflector capable of reflecting at least a portion of the substantially constant signal and being moveable in a ... | 08/09/1983 |
| 4395627 | Gasoline station system for enablement of selected pumps by a credit card console located at the pump island A system for use in a gasoline station for automatic enablement of fuel dispensing means from the fuel island by a customer credit card comprising credit card reader means, customer operable keyboard means, display means, output channel means, and first p... | 07/26/1983 |
| 4395626 | Gasoline station system for enablement of selected pumps by a credit card console located at the pump island A system for use in a gasoline station for automatic enablement of fuel dispensing means from the fuel island by a customer credit card comprising credit card reader means, customer operable keyboard means, display means, output channel means, and first p... | 07/26/1983 |
| 4372861 | Graphite dispersion Disclosed is a method for providing a shear stable graphite-in-oil dispersion by means of selected non-polymeric dispersing agents. The oxygen content of the graphite particles is at least about 1% by weight of the total weight of the ground graphite part... | 02/08/1983 |