Quotables
"Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible."
Simon Newcomb, astronomer ; Said in 1902, less than two years before the first flight at Kitty Hawk
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 |
| 4919765 | Process for the purification of tetrahydrofuran Tetrahydrofuran is recovered by a two stage distillation procedure from a crude hydrogenation product resulting from vapor phase hydrogenation of diethyl maleate and containing water, ethanol and a minor amount of n-butanol, and possibly also dissolved hy... | 04/24/1990 |
| 4683347 | Glycerine purification process The level of impurities such as glycerol-based acetals and/or ketals in glycerine, particularly glycerol-dimethylketal, is reduced by extraction of the glycerine with supercritical or near critical carbon dioxide.... | 07/28/1987 |
| 4655879 | Glycerol distillation process An improved process for purification of glycerol obtained from natural sources comprising alkalizing a glycerol-containing crude mixture in the presence of air for oxidation, evaporating the mixture in a thin-layer evaporator with redistillation of the re... | 04/07/1987 |
| 4560812 | Recovery of glycerine from saline waters Glycerine is recovered from an aqueous waste stream containing but minor amounts of glycerine by the requested steps of; (1) evaporating, (2) contacting with pentanol, (3) separating precipitated salt, (4) flashing to remove pentanol, and (5) vacuum disti... | 12/24/1985 |
| 4554390 | Method for harvesting algae A method for harvesting algae of the genus Dunaliella from suspensions thereof in brines containing sodium chloride at a concentration of about 3M or above, wherein the algal suspension is contacted with an adsorbent having a hydrophobic surface so as to ... | 11/19/1985 |
| 4450294 | Process for recovering oxygenated organic compounds from dilute aqueous solutions employing solid sorbent An oxygenated organic compound, such as ethanol, is recovered from a dilute aqueous stream thereof by contacting said stream with crosslinked polyvinylpyridine resin or nuclear substituted derivative thereof to effect selective sorption of the compound by... | 05/22/1984 |
| 4447643 | Process for recovering oxygenated organic compounds from dilute aqueous solutions employing liquid extraction media A thermally efficient process for recovering an oxygenated organic material, such as ethanol, present in dilute aqueous solution is disclosed which comprises contacting said dilute aqueous solution with at least one inert extractant which is liquid at amb... | 05/08/1984 |
| 4360407 | Process for removing glycerine The distillative separation of a mixture of glycerine and glycerine-based acetal or ketal transesterification products is aided by addition of a borate ester-forming compound to the mixture prior to distillation.... | 11/23/1982 |
| 4345976 | Process for separating mixtures of substances of low volatility The invention involves a process for substantially separating the components of mixtures of substances at least one of which is of low volatility while the other is of low or no volatility, the process using a compressed gas under supercritical conditions... | 08/24/1982 |
| 4341038 | Oil products from algae Oil products and a high nitrogen content residue are obtained by growing halophilic algae in saline solution, harvesting an algae-salt water slurry, solvent extracting said slurry, and recovering the product and residue. Use of a growth promoting enzyme, ... | 07/27/1982 |
| 4234509 | Process for the manufacture of fatty acid nitriles and glycerol from glycerides, especially from natural fats and oils Glycerol and aliphatic nitriles are simultaneously produced by treating liquid glycerides with gaseous ammonia at a rate of at least 200 liters of ammonia per kilogram of glyceride per hour at temperatures of from 220° to 300° C. in the presence of meta... | 11/18/1980 |
| 4199895 | Production of glycerol, carotenes and algae meal According to the invention there is provided a process for the simultaneous production of glycerol, carotenes(ଲ-carotene, its isomers and carotene-like substances) and protein rich material which comprises cultivating algae of the Dunaliella bardawi... | 04/29/1980 |
| 4115949 | Production of glycerol from algae A process for the production of glycerol and proteinous substances of nutritive value which comprises cultivating algae of the Dunaliella species in a nutrient medium containing the mineral requirements of growth of the algae, said nutrient medium having ... | 09/26/1978 |
| 3969196 | Process for the separation of mixtures of substances The process of separating a mixture which is in liquid state or solid state or liquid and solid state and contains at least one compound containing an organic group, which comprises A. contacting said mixture with a gas maintained under supercritical cond... | 07/13/1976 |
