Celebrity Inventors
Lawrence Welk, the bandleader who entertained millions of Americans over a generation of broadcasting his TV show, once received a patent: for a music-themed design of an ashtray.
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 |
| 6245195 | Decontamination of waste papers An improved process is disclosed for removing nonimpact inks and stickies contaminants from waste paper containing same by repulping the waste paper to form a slurry, adding a densifying agent and an agglomeration agent to the slurry, and subjecting the s... | 06/12/2001 |
| 4861377 | Cationic aqueous bituminous emulsion-aggregate slurries Cationic aqueous bituminous emulsion-aggregate slurries are disclosed to be formed with cationic emulsions prepared at elevated temperatures by emulsifying bitumen, such as an asphalt, in water with a cation-active emulsifier which is the product of the r... | 08/29/1989 |
| 4859362 | Sulfomethylated lignin amines Surface active agents are prepared from by-products of papermaking. According to this method, lignin, modified lignin, and mixtures thereof are reacted with a polyamine to produce an amine condensate, and this amine condensate is reacted with a bisulfite ... | 08/22/1989 |
| 4859245 | Viscosifiers for asphalt emulsions Bituminous emulsion viscosifiers are disclosed to be prepared by condensation of the residue obtained from the distillation of crude tall oil or tall oil derived fatty acids and resin acids (rosin) with various amines, which when added to the asphalt befo... | 08/22/1989 |
| 4843015 | Method for determining volatile phosphorus in carbon A method and apparatus for determining the phosphorus content which can be volatilized in a solid carbon sample. The sample is heated in the presence of steam to produce a vaporous steam containing volatile phosphorus. Next, the vaporous stream is passed ... | 06/27/1989 |
| 4810299 | Cationic aqueous bituminous emulsion-aggregate slurries Cationic aqueous bituminous emulsion-aggregate slurries are disclosed to be formed with cationic emulsions prepared at elevated temperatures by emulsifying bitumen, such as an asphalt, in water with a cation-active emulsifier which is the product of the r... | 03/07/1989 |
| 4806166 | Tall oil based amino esters as anti-stripping agents for asphalt An asphalt composition is disclosed having improved adhesion to aggregate comprising asphalt and an adhesion improving amount of an anti-stripping agent comprising the aminoester reaction product of at least one tall oil fatty acid and triethanolamine.... | 02/21/1989 |
| 4804694 | Process for preparation of high solids concentrated latex A process for agglomerating synthetic rubber latexes to obtain rubber particles having large average particle sizes comprising the steps of mixing with a synthetic rubber latex having primary or secondary carboxyl groups at the particle surfaces of the la... | 02/14/1989 |
| 4802898 | Method and apparatus for removing cyanogen chloride from air Cyanogen chloride is removed from air or other gases using a whetlerite type filter which omits chromium and comprises an activated carbon base impregnated with triethylenediamine and optionally copper and silver.... | 02/07/1989 |
| 4801311 | Method and apparatus for removing hydrogen cyanide, cyanogen and cyanogen chloride from air A chromium free absorbent filter material and method for removing toxic gases such as cyanogen chloride, cyanogen and hydrogen cyanide is disclosed. The filter material is a whetlerite type activated carbon impregnated with copper, silver, and molybdenum ... | 01/31/1989 |
| 4797157 | Amine salts of lignosulfonates Disclosed is a method for the production of a sulfomethylated lignin amine salt from the lignin by-product of the black liquor residue of a kraft pulping process and the use of lignin amine salts as additives in other chemical compositions. The lignin ami... | 01/10/1989 |
| 4789523 | Cationic and anionic lignin amines corrosion inhibitors Lignin amines are disclosed which are characterized by high nitrogen content and are water soluble at both alkaline and acidic pH values. The lignin amines have utility as flocculants, filtration aids, precipitants, scale inhibitors, asphalt emulsifiers, ... | 12/06/1988 |
| 4787960 | Cationic and anionic lignin amine sizing agents Lignin amines are disclosed which are characterized by high nitrogen content and are water soluble at both alkaline and acidic pH values. The lignin amines have utility as flocculants, filtration aids, precipitants, scale inhibitors, asphalt emulsifiers, ... | 11/29/1988 |
| 4786720 | Sulfomethylated lignin amines Surface active agents are prepared from by-products of papermaking. Lignin, modified lignin, resin acid, and tall oil fatty acid are reacted with a polyamine to produce an amine condensate, and this amine condensate is reacted with a bisulfite and formald... | 11/22/1988 |
| 4781840 | Cationic and anionic lignin amines as flocculants Lignin amines are disclosed which are characterized by high nitrogen content and are water soluble at both alkaline and acidic pH values. The lignin amines have utility as flocculants, filtration aids, precipitants, scale inhibitors, asphalt emulsifiers, ... | 11/01/1988 |
| 4775744 | Cationic and anionic lignin amines Lignin amines are disclosed which are characterized by high nitrogen content and are water soluble at both alkaline and acidic pH values. The lignin amines have utility as flocculants, filtration aids, precipitants, scale inhibitors, asphalt emulsifiers, ... | 10/04/1988 |
| 4764597 | Method for methylolation of lignin materials An improved method of producing methylolated lignins from the black liquor residue of a kraft wood-pulping process, which methylolated lignins may be further employed in other chemical reactions, such as in the production of sulfomethylated lignin salts s... | 08/16/1988 |
| 4752319 | Seed treatment method with aqueous suspension of alkali lignin A method of crop seed treatment is disclosed which provides an increase in the yield of seedlings emerging from the treated seeds in soil and stimulates growth of the seedlings. The method comprises coating the seeds prior to planting with an aqueous susp... | 06/21/1988 |
| 4751247 | Amine salts of lignosulfonates Disclosed is a method for the production of a sulfomethylated lignin amine salt from the lignin by-product of the black liquor residue of a kraft pulping process and the use of lignin amine salts as additives in other chemical compositions. The lignin ami... | 06/14/1988 |
| 4748235 | Method of producing improved amine salts of lignosulfonates A method of producing an amine-containing salt of a sulfonated lignin compound which may be effectively spray-dried for use in dry form comprising the steps of methylolating a lignin at an alkaline pH, lowering the pH of the methylolated lignin to precipi... | 05/31/1988 |
| 4744925 | Method for producing modified rosin & ester The catalytic combination of phosphinic acid (also called hypophosphorous acid) and a phenol sulfide compound is disclosed to accelerate the reaction rate for the esterification of a modified rosin with a polyhydric alcohol, as well as provide product col... | 05/17/1988 |
| 4743268 | Dispersant composition for azo dyestuffs contaminated with soluble copper impurities An improved composition for use as a dispersant in azo dye systems contaminated with soluble copper impurities comprising an amine lignosulfonate salt and ethylenediaminetetraacetic acid. Preferably, the ethylenediaminetetraacetic acid is employed in an a... | 05/10/1988 |
| 4743388 | Complex amide carboxylate lubricant rust inhibitor additive for metal working fluids An additive with good anti-corrosion and lubrication properties is disclosed for use in aqueous metal working fluids. The additive comprises a fatty acid substituted, carboxylated bis-amidoamine.... | 05/10/1988 |
| 4740591 | Lignin by-products of paper-making process A method of producing a lignin by-product of the black liquor residue of a kraft pulping process having improved water-solubility in amine salt form wherein the lignin precipitate of the black liquor residue is water-wash purified and maintained at modera... | 04/26/1988 |
| 4740590 | Method for preparing low electrolyte sodium lignosulfonates An improved method of producing sodium salts of low electrolyte-containing lignosulfonates suited for use as dye and print paste additives, comprising the steps of (1) methylolating a sodium salt of a lignin compound in an alkaline aqueous medium by the a... | 04/26/1988 |
| 4740367 | Vegetable oil adducts as emollients in skin and hair care products Certain vegetable oil lipid adducts, either alone or in combination with disproportionated vegetable oils, are disclosed which provide persistent softening effects upon incorporation in skin and hair care preparations. The emollients of the invention incl... | 04/26/1988 |
| 4732572 | Amine salts of sulfomethylated lignin Disclosed is a method for the production of a sulfomethylated lignin amine salt from the lignin by-product of the black liquor residue of a kraft pulping process and the use of lignin amine salts as additives in other chemical compositions. The lignin ami... | 03/22/1988 |
| 4725384 | Method for rosin esterification in the presence of phosphinic acid and phenol sulfide and subsequent neutralization with a magnesium salt The treatment of a rosin ester prepared by reacting rosin and a polyhydric alcohol in the presence of a catalytic combination of phosphinic acid (also called hypophosphorous acid) and a phenol sulfide compound with a magnesium salt of an organic acid is d... | 02/16/1988 |
| 4721778 | Ammonium lignosulfonates A method of producing ammonium salts of sulfomethylated lignins suited for use as dyestuff and coal-water slurry additives comprisng of the steps of ionizing the phenol component of a lignin material by-product of the black liquor of a kraft paper-making ... | 01/26/1988 |
| 4715864 | Lignosulfonate salts for use as dyestuff additives An improved lignosulfonate salt composition particularly suited for use as a dyestuff dispersant in azo dyestuff-containing dye systems wherein a sulfonated lignin salt is modified by ion-exchange reaction with an amine compound having a lower dissociatio... | 12/29/1987 |
| 4676927 | Rapid and medium setting high float bituminous emulsions Alkaline solutions of combinations of tall oil fatty acids or tallow fatty acids and their reaction products with acrylic acid, fumaric acid and maleic anhydride with and without catalytical amounts of iodine at a dosage of 0.4-0.6% based on the weight of... | 06/30/1987 |
| 4677086 | Shaped wood-based active carbon A shaped activated wood-based carbon with essentially no pore volume in pores greater than one micron in diameter and a higher apparent density is prepared from an active granular wood-based carbon with a significant pore volume in pores greater than one ... | 06/30/1987 |
| 4670482 | Ammonium lignosulfonates A method of producing ammonium salts of sulfomethylated lignins suited for use as dyestuff and coal-water slurry additives comprising of the steps of ionizing the phenol component of a lignin material by-product of the black liquor of a kraft paper-making... | 06/02/1987 |
| 4657633 | Delignification and bleaching of a cellulose pulp with an alkalioxygen-hypochlorite single stage sequential extraction An improved process for bleaching and delignifying cellulose pulp. The process comprises subjecting the pulp to a bleaching stage followed by washing, and thereafter extracting the bleached pulp as received from the bleaching stage in a caustic extraction... | 04/14/1987 |
| 4658036 | Invert emulsifiers for oil-base drilling muds A process is disclosed for preparation of invert emulsifiers useful for oil-base drilling muds. The emulsifiers are prepared by reacting at least one tall oil fatty acid with acrylic acid, maleic anhydride or fumaric acid. The product of this reaction is ... | 04/14/1987 |
| 4650607 | Method for rosin esterification The catalytic combination of phosphinic acid (also called hypophosphorous acid) and a phenol sulfide compound is disclosed to accelerate the reaction rate of esterification of rosin with a polyhydric alcohol, as well as provide product color improvements.... | 03/17/1987 |
| 4643848 | Modified rosin ester preparation Phosphinic acid (also called hypophosphorous acid), when used in very small quantities, is disclosed to act as a catalyst to accelerate the reaction of rosin with an unsaturated dibasic acid to form a modified rosin for subsequent esterification with a po... | 02/17/1987 |
| 4642336 | Ammonium lignosulfonates A method of producing ammonium salts of sulfomethylated lignins suited for use as dyestuff and coal-water slurry additives comprising of the steps of ionizing the phenol component of a lignin material by-product of the black liquor of a kraft paper-making... | 02/10/1987 |
| 4636224 | Ammonium lignosulfonates A method of producing ammonium salts of sulfomethylated lignins suited for use as dyestuff and coal-water slurry additives comprising of the steps of ionizing the phenol component of a lignin material by-product of the black liquor of a kraft paper-making... | 01/13/1987 |
| 4629469 | Humectant composition derived from kraft black liquor Method of producing a by-product of the black liquor residue of a kraft wood pulping process having excellent product stability and exhibiting humectant properties in dyestuff compositions, and the resultant humectant product and dyestuff compositions con... | 12/16/1986 |
