| Patent application number | Description | Published |
|---|
| 20090221466 | FLUORINATED SURFACTANTS - A composition of formula I | 09-03-2009 |
| 20110009668 | POLYFLUOROSULFONAMIDO AMINE AND INTERMEDIATE - Current methods for making polyfluorosulfonamido amines, which involve the use of a diamine reactant, provide low yields and produce an undesirable fluorine containing bis-sulfonamide by-product representing an economic loss. The bis-sulfonamide by-product is particularly undesirable because it shares very similar physical properties with the desired monoamine product thus making isolation of the desired polyfluorosulfonamido amine product difficult and costly. Furthermore, instead of the efficient incorporation of fluorine to make the desired polyfluorosulfonamido amine product, the bis-sulfonamide by-product constitutes a substantial loss of costly fluorinated starting material. The bis-sulfonamide by-product also constitutes an undesirable impurity that can worsen surfactancy, repellency, or other performance characteristics of the desired polyfluorosulfonamido amine product. The present invention provides a method of making a polyfluorosulfonamido amine without the production of a bis-sulfonamide by-product by reacting a polyfluoroalkylsulfonic compound with a monoamino amide rather than with a diamine reactant as in previously known methods. | 01-13-2011 |
| 20110232924 | SURFACTANT COMPOSITION FROM POLYFLUOROALKYLSULFONAMIDO ALKYL AMINES - The present invention relates to aminosulfonate and aminocarboxylate compositions derived from a mixture of polyfluoroalkylsulfonamido alkyl amines including at least one polyfluoroalkylsulfonamido alkyl amine and its analog, a di(polyfluoroalkylsulfonamido alkyl) amine. The aminosulfonate and aminocarboxylate compositions are useful for many purposes including amphoteric surface-active agents and aqueous film forming foams in fire fighting applications. | 09-29-2011 |
| 20110233459 | MIXTURE OF POLYFLUOROALKYLSULFONAMIDO ALKYL AMINES - The present invention relates to a mixture of polyfluoroalkylsulfonamido alkyl amines including at least one polyfluoroalkylsulfonamido alkyl amine and its analog, a di(polyfluoroalkylsulfonamido alkyl) amine. The invention also relates to polyfluoroalkylsulfonamido alkyl halide intermediate used to make the aforementioned mixture. | 09-29-2011 |
| 20110237834 | POLYFLUOROALKYLSULFONAMIDO ALKYL HALIDE INTERMEDIATE - The present invention relates to a polyfluoroalkylsulfonamido alkyl halide intermediate. The invention also relates to the use of the aforementioned halide intermediate to prepare a mixture of polyfluoroalkylsulfonamido alkyl amines including at least one polyfluoroalkylsulfonamido alkyl amine and its analog, a di(polyfluoroalkylsulfonamido alkyl) amine. | 09-29-2011 |
| Patent application number | Description | Published |
|---|
| 20080228204 | Limited Access Suturing Devices, System, and Methods - Medical suturing devices, systems, and methods will be useful for endoscopic (with or without access ports) or other surgeries in which access is limited, including ear, nose, and throat procedures. Articulation motions may be transferred from a handle to needle grasping jaws using an axial movement of a shaft that has axial stiffness (such as being stiff in compression) and lateral flexibility or an axial movement of a cable. An extension body (within which the shaft or cable moves) between the handle and jaws can be pre-bent or custom bent by the user. Portions of the devices may be disposable, replaceable, and/or reusable. A spring adjacent the clamp may open the clamp or impose a gripping force. | 09-18-2008 |
| 20080243147 | Replaceable Tip Suturing Devices, System, and Methods for Use with Differing Needles - Medical suturing devices, systems, and methods will be useful for endoscopic or open surgeries, including ear, nose, and throat procedures. Articulation motions may be transferred from a handle to needle grasping jaws using an axial movement of a shaft. Portions of the devices may be disposable, replaceable, and/or reusable, with different needle-grasping jaws and/or different elongate extension bodies having different configurations optionally being selectably coupleably to an articulatable handle and housing so as to allow the user to configure the device for a particular procedure. | 10-02-2008 |
| 20100268257 | SUTURING DEVICE, SYSTEM, AND METHOD - Improved medical suturing devices, systems, and methods may hold a suture needle at a fixed location relative to a handle of the device, allowing the surgeon to grasp and manipulate the handle of the suturing device to insert the needle through tissues in a manner analogous to use of a standard needle gripper. Cycling the handle from a closed position to an open position and back to the closed position may alternate the device between gripping the needle with a first clamp (for example, along a proximal portion of the needle) to gripping the needle with a second clamp (for example, along a distal portion of the needle) and optionally back to gripping with the first clamp, with the needle often staying at a substantially fixed location relative to the suturing device body. Related single-clamp needle grasping devices can be bent plastically by a surgeon, and/or have bodies that are grasped by a hand while a portion of the hand actuates a handle. | 10-21-2010 |
| 20110251627 | Suturing Device, System, and Method - Improved medical suturing devices, systems, and methods may hold a suture needle at a fixed location relative to a handle of the device, allowing the surgeon to grasp and manipulate the handle of the suturing device to insert the needle through tissues in a manner analogous to use of a standard needle gripper. Cycling the handle from a closed position to an open position and back to the closed position may alternate the device between gripping the needle with a first clamp (for example, along a proximal portion of the needle) to gripping the needle with a second clamp (for example, along a distal portion of the needle) and optionally back to gripping with the first clamp, with the needle often staying at a substantially fixed location relative to the suturing device body. Related single-clamp needle grasping devices can be bent plastically by a surgeon, and/or have bodies that are grasped by a hand while a portion of the hand actuates a handle. | 10-13-2011 |
