Famous Patents
The ice cream cone was invented at the St. Louis Worlds Fair by Ernest Hamwi in 1904. His waffle booth was next to an ice cream vendor who ran short of dishes. Hamwi rolled a waffle to hold ice cream and the cone was born.
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 |
| 6793730 | Methods of cementing The present invention provides improved methods for cementing. The methods are basically comprised of the steps of preparing a cement composition comprised of hydraulic cement, water, gas, surfactants, a cement early strength accelerator and a mildly set retarding c... | 09/21/2004 |
| 6679944 | Leakage water cut-off agent and method of preventing water leakage An object of the present invention is to provide a leakage water cut-off agent that has an excellent power to seal a water leakage site by a simple process without damaging the appearance of a building. A leakage water cut-off agent of the present inventi... | 01/20/2004 |
| 6630021 | Cementing casing strings in deep water offshore wells The present invention provides improved compositions and methods for cementing casing strings in deep water offshore formations penetrated by well bores. The cement composition basically comprises hydraulic cement, water, an environmentally degradable wat... | 10/07/2003 |
| 6511537 | Retarding systems and application to oil well cementing Systems for retarding setting in an oilfield well cement slurry comprise a solution of a phosphonate selected from methylene phosphonic acid derivatives and a phosphate, in particular selected from the following salts or the corresponding acids: mono-phos... | 01/28/2003 |
| 6488089 | Methods of plugging wells Methods of forming one or more plugs in a well bore are provided. The methods basically comprise the steps of dropping into the well bore a cementitious material which will delayedly react with water therein to form an impermeable solid and which has been... | 12/03/2002 |
| 6478868 | Early-enhanced strength cement compositions and methods The present invention provides improved early-enhanced strength cement compositions and methods. The cement compositions can be utilized in surface construction projects as well as in the construction of oil, gas and water wells. The improved cement compo... | 11/12/2002 |
| 6454004 | Cementing casing strings in deep water offshore wells The present invention provides improved compositions and methods for cementing casing strings in deep water offshore formations penetrated by well bores. The methods are basically comprised of the steps of preparing a cement composition comprised of hydra... | 09/24/2002 |
| 6248806 | Antifouling paint The present invention related to self-polishing marine antifouling paint compositions comprising rosin or rosin equivalent(s), optionally fibres, and one or more polymeric flexibilizer component(s). The rosin part of the paint preferably comprises ammoniu... | 06/19/2001 |
| 6244343 | Cementing in deep water offshore wells An improved method of cementing casing in a deep water offshore formation penetrated by a well bore comprising the steps of preparing a foamed cement composition comprised of calcium aluminate cement, a set accelerating additive, a thickening time increas... | 06/12/2001 |
| 5782970 | Lightweight, waterproof, insulating, cementitious composition A lightweight insulating concrete is produced from a cement mix containing sawdust, diatomite, bentonite, and lime. The addition of rock salt and the entrainment of air bubbles results in a concrete with a high compressive strength, high thermal resistanc... | 07/21/1998 |
| 5554218 | Cement compositions and methods of underwater application This invention relates generally to the field of cement, especially cement for underwater application. The invention provides a composition for preparing cement that solidifies underwater comprising exothermic micro particles and base cement. Exothermic m... | 09/10/1996 |
| 5358749 | Lining, coating or manufacturing underwater structures to prevent living marine organisms adhering to or building up on exposed surfaces The present invention provides a composition of matter and methods of using such composition which will substantially minimize the detrimental adherence to and buildup of living marine organisms on exposed surface areas of underwater structures. Such comp... | 10/25/1994 |
| 5304236 | Composition of matter for lining, coating or manufacturing underwater structures to prevent living marine organisms adhering to or building up on exposed surfaces The present invention provides a and methods of using such composition which will substantially minimize the detrimental adherence to and buildup of living marine organisms on exposed surface areas of underwater structures. Such composition of matter incl... | 04/19/1994 |
| 5205646 | Method for conveyance of cement under water to form concrete This invention relates to the conveyance of cement under water to form concrete. The method claimed utilizes, inter alia, a positive displacement pump and feed pipe to convey unreacted cement, suspended in an environmentally safe and non-reactive liquid v... | 04/27/1993 |
| 5178455 | Method for recycling wash residue of ready mixed concrete and system therefor The present invention relates to a method and a system for recycling wash residue of ready mixed concrete include the steps of condensing used cement sludge to a predetermined concentration, storing the condensed sludge, sampling the stored sludge and det... | 01/12/1993 |
| 5116421 | High temperature fluid loss additive for cement slurry and method of cementing A fluid loss control additive for use in well cementing operations wherein the downhole temperature ranges from about 200° to about 500° F. The additive is a polymer comprised of 2-acrylamido-2-methyl propane-3-sulphonic acid, N-vinyl,-N-methylacet... | 05/26/1992 |
| 4892586 | Concrete composition for roller compacted placing method A concrete composition for use in a roller compacted placing method includes a cement, an aggregate, an organic acid and/or a salt thereof and a set accelerating inorganic salt.... | 01/09/1990 |
| 4767461 | Method for manufacturing concrete The present invention is directed to a method for manufacturing a concrete which comprises the steps of mixing 20 to 100% of the total weight of cement used with water in an amount of 20 to 50% of this cement weight in order to prepare a stiff-consistency... | 08/30/1988 |
| 4743301 | Concrete composition for underwater use A concrete composition for underwater use contains about 0.1 to 4% by weight based on cement content of a water soluble vinyl polymer containing vinyl units having sulfonic groups. The concrete composition is easy to mix and prevents separation of concret... | 05/10/1988 |
| 4707188 | Cement composition for underwater concreting A cement composition is suitable for underwater concreting and comprises 100 parts by weight of cement and 0.1 to 2.0 parts by weight of carboxymethyl hydroxyethyl cellulose.... | 11/17/1987 |
| 4650520 | Slurry for cementing, especially cementing of lining pipes in drill holes, and method for production of such a slurry A slurry is disclosed which contains a hardening mixture of water and cement, especially for cementing lining pipes into drilling holes. The slurry comprises a first slurry component comprising a dispersion of a hardening cement slurry in a liquid capable... | 03/17/1987 |
| 4508572 | Cement composition for laying underwater A cement composition is provided which has the property of being inseparable in water, having improved strength and no effect in delaying setting time or reducing strength. It is produced at a cheaper cost by reducing the amount of a polyacrylamide compou... | 04/02/1985 |
| 4502887 | Underwater concreting cement composition An underwater concreting cement composition comprising a base prepared by adding (a) 0.2 to 2.0 parts by weight of hydroxyethylcellulose and (b) 0.01 to 0.2 part by weight of high-molecular weight polyethylene oxide and/or 0.2 to 4.0 parts by weight of ca... | 03/05/1985 |
| 4487633 | Water-inseparable concrete composition A concrete composition is provided which has the property of being inseparable in water and no effect in delaying setting time or reducing strength. A polyacrylamide partial hydrolysate having a molecular weight of one million or higher and a hydrolysis d... | 12/11/1984 |
| 4330632 | Lightweight concrete using polymer filled aggregate for ocean applications A structural grade lightweight concrete that is especially suited for ocean pplications. The lightweight concrete uses regular lightweight aggregate particles that have been modified by filling the voids within the particles with a polymeric material. The ... | 05/18/1982 |
| 4192690 | Fiber-reinforced hydraulically hardenable shaped objects The invention relates to a process for the preparation of fiber-reinforced cement-based hydraulically hardenable shaped objects, which comprises spraying matrix and fibers with a spraying apparatus onto a deflecting surface to produce a mixture of matrix ... | 03/11/1980 |
| 3973978 | Method for execution of quick hardening cement A method for working quick hardening cements comprising preparing (A) a composition comprising a cement paste, mortar or concrete and (B) a composition comprising a powder or suspension composition of calcium aluminate and inorganic sulfate, mixing the co... | 08/10/1976 |
