U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Famous Patents

In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.

Newsletter  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.

 

Class 422/42 - By preventing evaporation


Subclass of Class 422 - Chemical apparatus and process disinfecting, deodorizing, preserving, or sterilizing
Definition: Process wherein the liquid is protected against loss by
No. of patents: 38
Last issue date: 03/04/2008


NumberTitleIssue Date
7339015Multifunctional self-decontaminating surface coating
A coating having an adhesive hydrophilic polymer and an amphiphilic additive. The amphiphilic additive has a hydrophilic chain, a biocidal functional group bonded to the hydrophilic chain, and a hydrophobic moiety bonded to the hydrophilic chain or to the biocidal f...
03/04/2008
7335332Method and apparatus for treating digestible and odiferous waste
A method is provided for minimizing the emissions of odorous gases and neutralizing volatile fatty acids generated by anaerobic decomposition of digestible and odiferous animal waste that includes the step of adding an alkaline solution to the digestible and odifero...
02/26/2008
7223362Methods for extinguishing petroleum-based fires, suppressing petroleum-released vapors and cleaning petroleum-contaminated surfaces
Compositions and methods for emulsifying a petroleum product that has been spilled upon a portion of the earth's surface or that is burning are based upon use of a nonionic, primary surfactant composition comprising a first ethoxylated sorbitol oleate and, preferabl...
05/29/2007
7175814Air disinfecting system and cartridge device containing ultraviolet light
A cartridge device containing UVC for air disinfection that comprises individual ultraviolet bulb, HEPA/Carbon filter, LED for detection of replacement, ballast and electrical components; cartridge is plugged into a backplane which allows for easy installation and s...
02/13/2007
6602464Method and apparatus for treating digestible and odiferous waste
A method and apparatus are provided for minimizing the emissions of odorous gases and fatty acids generated by digestible and odiferous waste. The apparatus includes a treatment comprising oil, activated carbon and a base buffering agent. The apparatus al...
08/05/2003
6558705Composition for reducing evaporation at sites both on land and open water
Parent disclosure, now U.S. Pat. No. 6,303,133 B1, taught a calcium hydroxide containing evaporation retardant having particles that mutually repel one another because of water-induced ionization. Calcium hydroxide makes the retardant unsuitable for treat...
05/06/2003
6485649Method and device for the production of pure water
Input water is preheated in a heat exchanger (2), pumped (4) through another heat exchanger (5) into a heating unit (6). The heating unit heats the water to a temperature of above 100° C., preferably 140-150° C., while maintaining the water in a liquid ...
11/26/2002
6409921Integrally asymmetrical polyolefin membrane for gas exchange
Process for producing hydrophobic polyolefinic membranes for gas exchange via thermally induced liquid-liquid phase separation is disclosed. A solution of at least one polyolefin in a solvent system, of a compound A and a compound B having a viscosity les...
06/25/2002
6303133Film-spreading powder for suppressing water evaporation
The invention pertains to enhancing the dispersion on the surface of a still or moving body of a polar liquid, such as water, of particles of a powder of the composition essentially comprising a monolayer-forming constituent, such as hexadecanol or octade...
10/16/2001
5935276Method of impeding the evaporation of a solvent and compositions useful therein
A method of impeding the evaporation of a solvent by at least partially dissolving a solvent soluble polymer in the solvent in sufficient amounts so as to impede the evaporation of the solvent is disclosed. In one embodiment the soluble polymer may be sel...
08/10/1999
5688440Organic gellation agents
The present invention generally relates to the formation of organic gels by dissolving organic gelling agents in organic solvents. The aryl cyclohexanol gelling agents employed in this invention are not structurally related to previously known gellation a...
11/18/1997
5558845Film pump for applying a monolayer film over water surfaces
A device for applying an evaporation-inhibiting film to an exposed liquid surface of a liquid body, which includes an impeller disposed below and coplanar with the exposed liquid surface; means for rotating said impeller; means for delivering the evaporat...
09/24/1996
5549869Method of creating a barrier to wood materials and wooden structures from attack by humidity, fungi and insects
A method for creating a barrier to protect wood materials for house construction or wooden structures such as houses from humidity, moisture and/or biological attacks, such as wood decaying fungi and termites, is disclosed. The method is to treat wood its...
08/27/1996
5529757Apparatus for reducing emissions of pollutants
An apparatus is also described for reducing pollutant emissions into the surrounding air from storage of liquid materials in a tank having a cover which is movable in the vertical direction in the tank and moves along with the fill level of the liquid mat...
06/25/1996
5434192High-stability foams for long-term suppression of hydrocarbon vapors
Novel formulations for aqueous foams which, in the presence of hydrocarbons, can persist for 24 hours or more. The foams are suitable for the suppression of hydrocarbon and polar organic vapors....
07/18/1995
5296164High-stability foams for long-term suppression of hydrocarbon vapors
Novel formulations for aqueous foams which, in the presence of hydrocarbons, can persist for 24 hours or more. The foams are suitable for the suppression of hydrocarbon and polar organic vapors....
03/22/1994
5225325Immunohistochemical staining method and reagents therefor
The present invention provides an immunohistochemical staining method using improved reagents. In one aspect, the method uses an evaporation inhibitor liquid to prevent evaporation of reagents applied to an assay region of a slide....
07/06/1993
5215786Composition for providing a foam barrier between a substrate and the atmosphere and the method of use
A composition for forming an essentially biodegradable foam for application to a substrate to provide a barrier between the substrate and the atmosphere formulated from a mixture in water of specified materials in certain proportional relationships. Its u...
06/01/1993
5125439Method for controlling vapor emissions during loading of tankers
An improved method for loading crude oil into a tank or tanks of a tanker ship wherein a layer of foam is used to suppress the formation of hydrocarbon vapors during the loading operation. The foam is generated at a point remote from the tanks and is then...
06/30/1992
5102631Evaporation chimney
An evaporation reduction apparatus for open mouth liquid containers and a method for substantially reducing liquid to air evaporation surface exposure wherein an elongated tube having an upper end portion of such outside dimension in relationship to the i...
04/07/1992
5093080Conservation process for agricultural products
A preservation process and apparatus which serves to preserve respiratory agricultural produces, such as plants, flowers, fruits, vegetables, cereal grain and the like, without necessitating the use of chemical coatings, chemical preservatives, fumigants,...
03/03/1992
4769335Method and apparatus for transporting photosensitive fluids
A container body is formed of a polymer material and contains coloring matter effective to render the body substantially opaque to electromagnetic radiation having a wave length of about 5 to about 600 nm and translucent or semi-transparent to electromagn...
09/06/1988
4729849Fluorine-containing surface active compositions
A fluorine-containing surface active composition capable reducing the surface tension of water and the interfacial tension between water and oil, which comprises (A) at least one of cationic, non-ionic to ampho-ionic surfactant showing a surface tension o...
03/08/1988
4629633Composition and method for protection of liquid surface from heat- and mass-transfer in liquid gas system
A composition for protection of the liquid surface from heat- and mass-trfer, for example from evaporation, contains a polymer limitedly swelling in the protected liquid or a mixture of said polymer with a neutral filler having a density lower than the d...
12/16/1986
4609489Fluorine-containing surface active composition
A fluorine-containing surface active composition capable reducing the surface tension of water to the interfacial tension between water and oil, which comprises (A) at least one of cationic, non-ionic and ampho-ionic surfactant showing a surface tension o...
09/02/1986
4459221Fluorine-containing surface active composition
A fluorine-containing surface active composition capable of reducing the surface tension of water and the interfacial tension between water and oil, which comprises (A) at least one cationic, non-ionic or ampho-ionic surfactant showing a surface tension o...
07/10/1984
4458021Blood gas control
Disclosed are cell-free, stable, aqueous blood gas controls containing a proteinaceous foaming agent. The addition of foaming agent to the blood gas control permits generation of a gas impermeable foam within the head space of a sealed ampule in which the...
07/03/1984
4426003Drain cleaner package
A drain cleaner package which reduces the hazards of handling a caustic material, such as sulfuric acid, or an aqueous alkali metal hydroxide solution in a container by providing a layer of immiscible liquid in the container above the caustic material. In...
01/17/1984
4386052Composition and method for suppressing vapor loss of volatile hydrocarbons
A very effective composition for inhibiting vapor losses of stored hydrocarbons comprises a mixture of a surfactant, such as a foaming agent, and a polyglycol. A method for retarding evaporation of volatile hydrocarbons from a body of liquid hydrocarbon m...
05/31/1983
4326986Composition and method for suppressing vapor loss of volatile hydrocarbons
A very effective composition for inhibiting vapor losses of stored hydrocarbons comprises a mixture of a surfactant, such as a foaming agent, and a polyglycol. Indeed a method for retarding evaporation of volatile hydrocarbons from a body of liquid hydroc...
04/27/1982
4268411Microcapsules having a wall of inorganic substance and process for the preparation thereof
A process for preparing microcapsules comprising a core of highly viscous liquid substance encapsuled with a wall of an aggregate of finely divided silica powder, which comprises adding the highly viscous liquid substance into a powder bed of the finely d...
05/19/1981
4235743Composition and method for suppressing vapor loss of volatile hydrocarbons
A very effective composition for inhibiting vapor losses of stored hydrocarbons comprises a mixture of a fluorosurfactant, a silicone surfactant, a polyglycol, and a glycol ether. Indeed, a method for retarding evaporation of volatile hydrocarbons from a ...
11/25/1980
4106905Process for providing insulating covers
A process for providing a thermal insulating cover of discrete particles for a container of fluids involves forming a plurality of hollow interior, discrete, ceramic particles, firing the particles at a temperature of at least 350° C and then covering th...
08/15/1978
4035149Vapor barriers for liquid conservation
The evaporation of volatile non-aqueous liquids is inhibited by a floating layer of expanded cereal grains optionally treated with fluorocarbons or perlite treated with fluorocarbons....
07/12/1977
3959154Method and composition for retarding the evaporation of ammonia and amines
This invention relates to the retardation of evaporation of ammonia and amines from essentially aqueous solutions by admixture thereto of an alkyl ether having the formula: , wherein R is an alkyl group containing from 8 to 30 carbon atoms, and R' is an -...
05/25/1976
3950494Suppression of volatilization of noxious acidic vapors
A body of volatile, inorganic, normally liquid chemical which reacts with water, such as liquid sulfur trioxide, is treated to suppress the evolution of noxious acidic vapors therefrom to the atmosphere by applying to the exposed surface of said liquid bo...
04/13/1976
3941705Fire extinguishing compositions containing fluorinated surfactants
A surface-active fluorinated composition characterized by the association therein of from 35% to about 60% of at least one surface-active ampholyte compound of the formula ##EQU1## wherein n is an integer between 1 and 20, a is a number between 2 and...
03/02/1976
 
Sign InRegister
Username  
Password   
forgot password?