Celebrity Inventors
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.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7678957 | Alkylation process with catalyst transfer A system and/or process for alkylating hydrocarbons which includes an improved method of safely handling alkylation catalyst is disclosed. The process includes passing the alkylation catalyst from a settler vessel to a catalyst receiving vessel, via a catalyst coole... | 03/16/2010 |
| 7446238 | Alkylation process with recontacting in settler A system and/or process for decreasing the level of at least one organic fluoride present in a hydrocarbon phase contained in an alkylation settler by contacting the hydrocarbon phase with an HF containing stream, containing greater than about 80 wt. % and less than... | 11/04/2008 |
| 7371918 | Alkylation process with settler effluent recycle A system and/or process for increasing the isobutane to olefin ratio in an alkylation process/system is disclosed. The system and/or process includes provisions for charging a portion of the settler effluent as a feed to at least one reaction zone downflow from the ... | 05/13/2008 |
| 7319180 | Paraffin alkylation A process for the alkylation of alkane with olefin or olefin precursor such as an oligomer of tertiary olefin comprising contacting a liquid system comprising acid catalyst, isoparaffin and olefin in concurrent downflow into contact in a reaction zone with a dispers... | 01/15/2008 |
| 7294420 | Production of hydrogen A method of producing hydrogen for a fuel cell from a hydrocarbon fuel composition, by providing a hydrocarbon fuel composition, which is obtained by contacting a liquid hydrocarbon feed comprising an alkylating agent with an acidic catalyst, under conditions effect... | 11/13/2007 |
| 7250542 | Paraffin alkylation A process for the alkylation of alkane with olefin or olefin precursor such as an oligomer of tertiary olefin comprising contacting a liquid system comprising acid catalyst, isoparaffin and olefin in concurrent downflow into contact in a reaction zone with a dispers... | 07/31/2007 |
| 7119243 | Alkylation process with efficient effluent refrigeration An alkylation process in which a recycle stream is cooled by heat exchange with the alkylation reactor effluent is disclosed. ... | 10/10/2006 |
| 7038099 | Environmentally safe alkylation of aliphatic and aromatic hydrocarbons with olefins using solid HF-equivalent catalysts A method of alkylating aliphatic or aromatic hydrocarbons with olefins using solid hydrogen fluoride-equivalent catalysts is described. Preferred catalysts comprise solid polymeric onium polyhydrogen fluoride complexes. ... | 05/02/2006 |
| 6995296 | Paraffin alkylation A process for the alkylation of alkane with olefin or olefin precursor such as an oligomer of tertiary olefin comprising contacting a liquid system comprising acid catalyst, isoparaffin and olefin in concurrent downflow into contact in a reaction zone with a dispers... | 02/07/2006 |
| 6943276 | Alkylation process with efficient effluent refrigeration An alkylation process in which a recycle stream is cooled by heat exchange with the alkylation reactor effluent is disclosed. ... | 09/13/2005 |
| 6858770 | Paraffin alkylation A process for the alkylation of alkane with olefin or olefin precursor such as an oligomer of tertiary olefin comprising contacting a liquid system comprising acid catalyst, isoparaffin and olefin in concurrent downflow into contact in a reaction zone with a dispers... | 02/22/2005 |
| 6552241 | Alkylation process A system and/or process for removing water from an alkylation catalyst mixture of an alkylation process is disclosed. The process includes passing an alkylation reaction zone effluent to a settler for separation into a hydrocarbon phase and a catalyst mix... | 04/22/2003 |
| 6429349 | Co-alkylation for gasoline RVP reduction Methods and apparatus that are used in an alkylation reactor system for adding low purity isopentane to alkylation reactor feed to block formation of isopentane, resulting in high incremental isopentane conversion and minimal octane and C5+ yield loss, an... | 08/06/2002 |
| 6426441 | Method for reducing organic fluoride levels in hydrocarbons A system and/or process for decreasing the level of at least one organic fluoride present in a hydrocarbon mixture by first passing the hydrocarbon mixture to an eductor and educting into the hydrocarbon mixture a catalyst comprising a volatility reducing... | 07/30/2002 |
| 6281405 | Alkylation process using membrane for recovery of halides A process for recovering halides from hydrocarbon containing streams is disclosed using a sulfonated hexafluro bis-A-polysulfone membrane of polymers and copolymers having the polymer repeat unit of the formula: ##STR1## in the polymer or copolymer. This ... | 08/28/2001 |
| 6194625 | Alkylation by controlling olefin ratios Disclosed are various embodiments for alkylating olefins and isoparaffins in the presence of an acid to reduce and/or control acid consumption or maximize and/or control the octane number of the produced alkylate product. One embodiment includes alkylatio... | 02/27/2001 |
| 6187986 | Fresh plant inventory hydrofluoric acid eduction process A slipstream of high pressure, cooled isobutane recycle from within an alkylation process unit is used to withdraw hydrofluoric acid from a storage vessel by means of an eductor and discharges the same into a reactor section of the unit. The eductor is pr... | 02/13/2001 |
| 6137021 | Conversion of an HF alkylation unit A method of converting an HF alkylation process into a solid catalyst alkylation process is disclosed. In this method, an HF alkylation unit having an HF stripper downstream of the HF alkylation reactor is modified to a benzene rectifier. By modifying the... | 10/24/2000 |
| 6043404 | Removal of alkyl halides from hydrocarbon stream A process for the removal of alkyl halides from a liquid hydrocarbon substrate by reaction of the halides with an isoalkane and/or aromatic hydrocarbons in the presence of an acid catalyst supported on a solid support material.... | 03/28/2000 |
| 5969206 | Reverse emulsion aliphatic alkylation process with catalyst-olefin premixing The invention concerns a process for the alkylation of at least one isoaffin selected from the group formed by isobutane and isopentane by at least one olefin containing 2 to 6 carbon atoms per molecule in the presence of a liquid acid catalyst, the proce... | 10/19/1999 |
| 5958350 | Extraction vessel for the removal of corrosive compounds from a fluid stream A process for the removal of corrosive compounds from a fluid stream, comprising the steps of: in an extraction column with an outer steel tube and an inner tube of corrosion resistant material having an open inlet end and an open outlet end and being arr... | 09/28/1999 |
| 5948947 | Alkylation process with separate rejection of light and heavy acid soluble oils An HF-agent complex, such as HF-pyridine complex where the complexing agent is pyridine, is recovered and recycled from a by-product stream containing ASO, and ASO is rejected from the by-product stream, in an alkylation process using the complex.... | 09/07/1999 |
| 5942654 | Process for the removal of corrosive compounds from a fluid stream A process for the removal of corrosive compounds from a fluid stream, comprising the steps of: in an extraction column with an outer steel tube and an inner tube of corrosion resistant material having an open inlet end and an open outlet end and being arr... | 08/24/1999 |
| 5895831 | Solid catalyst alkylation process A process for the production of motor fuel alkylate by reacting an alkene hydrocarbon, an alkane hydrocarbon and a hydrogen halide with a solid alkylation catalyst disposed in swing beds. The spent solid alkylation catalyst is regenerated in a highly inte... | 04/20/1999 |
| 5859305 | Method for optimizing hydrogen fluoride alxylation and increasing process safety A method of regulating the concentration of onium in a liquid onium poly(hydrogen fluoride) composition utilized in a hydrogen fluoride catalyzed alkylation reaction for a given level of total airborne hydrogen fluoride is disclosed. Also disclosed is a m... | 01/12/1999 |
| 5841014 | Alkylation by controlling olefin ratios Disclosed are various embodiments for alkylating olefins and isoparaffins in the presence of an acid to reduce and/or control acid consumption or maximize and/or control the octane number of the produced alkylate product. One embodiment includes alkylatio... | 11/24/1998 |
| 5811627 | Alkylation reactions Improved acid catalyzed alkylation reactions occur for the addition of a hydrocarbyl reactant to an alkene, by the optimized addition of an oxidizing agent, such as a peroxide, molecular oxygen, ozone, peracid, and one or more of the peroxide, molecular o... | 09/22/1998 |
| 5767335 | Method for preventing the accumulation of light ASO in the alkylation catalyst of alkylation process system Disclosed is an alkylation process which utilizes a mixture of sulfone and hydrogen fluoride as an alkylation catalyst. The process provides for the removal of light ASO from the alkylation catalyst that accumulates therein as a result of the inability to... | 06/16/1998 |
| 5763728 | Recovery and recycle of HF-amine complex in HF alkylation An HF-agent complex, such as HF-pyridine complex where the complexing agent is pyridine, is recovered and recycled from a by-product containing stream in an alkylation process using the complex by (a) selectively removing a portion of the HF from the by-p... | 06/09/1998 |
| 5723715 | Isoparaffin-olefin alkylation A novel alkylation catalyst is described which is used in processes for alkylating olefin hydrocarbons with isoparaffin hydrocarbons to produce high octane alkylate products suitable for use as a blending component of gasoline motor fuel. The novel cataly... | 03/03/1998 |
| 5689030 | Method for prolonging the life of alkylation product stream defluorinator beds A method for prolonging the life of a defluorinator material contained within an alkylation process product stream defluorination zone used to remove organic fluorides from a product stream produced by an alkylation process that utilizes an alkylation cat... | 11/18/1997 |
| 5663474 | Alkylation process using hydrogen fluoride-containing alkylation catalysts This invention relates to catalysts for alkylation reactions and their preparation. More particularly, the invention relates to an alkylation process using a hydrogen fluoride-containing alkylation catalyst, which catalyst may be safely and easily handled... | 09/02/1997 |
| 5659096 | Combination of olefin oligomerization and paraffin alkylation In a process for alkylating C4 -C18 alkenes in the presence of an acid catalyst, propylene is separated from the alkenes feed, the propylene is oligomerized to oligomers containing maily propylene tetramers, and the propylene oligome... | 08/19/1997 |
| 5648587 | Method for separating sulfone from a hydrocarbon stream having a concentration of sulfone producing a dry sulfone product Disclosed is a process for separating sulfone from a hydrocarbon stream containing a small concentration sulfone by using water as an extraction solvent. The extraction solvent, laden with the removed sulfone, is further processed to separate the extracti... | 07/15/1997 |
| 5648588 | Method for removing sulfone and hydrogen fluoride from a hydrocarbon stream and producing a sulfone product free of hydrogen fluoride Disclosed is a process for separating sulfone and hydrogen fluoride from hydrocarbon streams containing a concentration of such compounds. An extraction solvent laden with sulfone and HF is contacted with a reversible base in order to remove the HF theref... | 07/15/1997 |
| 5639932 | Isoparaffin-olefin alkylation A novel alkylation catalyst is described which is used in processes for alkylating olefin hydrocarbons with isoparaffin hydrocarbons to produce high octane alkylate products suitable for use as blending components of gasoline motor fuel. The novel catalys... | 06/17/1997 |
| 5569807 | Isoparaffin-olefin alkylation A novel alkylation catalyst is described which is used in processes for alkylating olefin hydrocarbons with isoparaffin hydrocarbons to produce high octane alkylate products suitable for use as blending components of gasoline motor fuel. The novel catalys... | 10/29/1996 |
| 5557028 | Alkylation reactions Improved acid catalyzed alkylation reactions occur for the addition of a hydrocarbyl reactant to an alkene, by the optimized addition of an oxidizing agent, such as a peroxide, molecular oxygen, ozone, peracid, and one or more of the peroxide, molecular o... | 09/17/1996 |
| 5534657 | Isoparaffin-olefin alkylation A novel alkylation catalyst is described which is used in processes for alkylating olefin hydrocarbons with isoparaffin hydrocarbons to produce high octane alkylate products suitable for use as blending components of gasoline motor fuel. The novel catalys... | 07/09/1996 |
| 5527980 | Regeneration of hydrogen fluoride alkylation catalyst An improved process for the regeneration of an ASO-containing HF catalyst by the removal of ASO from said catalyst through the utilization of a separation column equipped with fixed valve fractionation trays. The separation column defines a separation zon... | 06/18/1996 |
