George Morgan Jr, Thomas F Rich: Process for forming a layered paper web having improved bulk, tactile impression and absorbency and paper thereof. The Procter & Gamble Company, E Kelly Linman, Fredrick H Braun, John V Gorman, November 30, 1976: US03994771 (443 worldwide citation)

A wet-laid composite, soft, bulky and absorbent paper structure is prepared from two or more layers of furnish which are preferably comprised of different fiber types. The layers are preferably formed from the deposition of separate streams of dilute fiber slurries, the fibers typically being relati ...

Donald J Anderson, Charles F Kirkvold, Peter Pisio: Method of recovering viscous petroleum from tar sand. Chevron Research Company, R L Freeland Jr, Edward J Keeling, November 30, 1976: US03994340 (275 worldwide citation)

Recovery of viscous petroleum such as from tar sands is assisted using a substantially vertical passage from the earth's surface which penetrates the tar sand and has extending therefrom a lateral hole containing a flow path isolated from the tar sand for circulating a hot fluid to and from the vert ...

Donald J Anderson, Charles F Kirkvold, Peter Pisio, John R Lishman: Recovering viscous petroleum from thick tar sand. Chevron Research Company, R L Freeland Jr, Edward J Keeling, November 30, 1976: US03994341 (255 worldwide citation)

Recovery of viscous petroleum such as from thick tar sands is assisted using a closed-loop flow path from the earth's surface through a substantial portion of the formation for conducting hot fluid to reduce the viscosity of the petroleum in the formation to develop a potential passage in the format ...

Gerald Turp, Mohammad Ahmad: Trocar. Centre de Recherche Industrielle du Quebec, Cushman Darby & Cushman, November 30, 1976: US03994287 (248 worldwide citation)

The disclosure herein describes a trocar particularly intended for use in laparoscopic tubal cauterization and formed of: a puncturing sharp-pointed instrument, a cannula with a flange at one end thereof, a flexible insulating ring which is received in the flange recess bore, and a collar secured in ...

J David Kopf: Ophthalmic instrument. November 30, 1976: US03994297 (136 worldwide citation)

An improved ophthalmic instrument for removing vitreous and the like from the eye is provided having a smooth, unobstructed exterior surface for easy handling. The air pressure connection, vacuum connection and saline infusion connection are made through the end wall of the cap of the device.

Dominic A Cusano, James A Loughran, Yen Sheng Edmund Sun: Direct bonding of metals to ceramics and metals. General Electric Company, R J Mooney, D E Stoner, November 30, 1976: US03994430 (129 worldwide citation)

Disclosed is a method of bonding metals to substrates such as ceramics or metals. A bonding agent forms a eutectic alloy with the metal to provide bonding. Several methods of supplying the bonding agent to the system are disclosed. However, regardless of which method of introducing the bonding agent ...

Lloyd Frank Hansen: Unitary therapeutic aerosol dispenser. American Cyanamid Company, Samuel Branch Walker, November 30, 1976: US03994421 (123 worldwide citation)

A combination aerosol container carrier and deceleration chamber carries an aerosol container interiorly of the deceleration chamber and by pulling out and, pivoting the aerosol container in its case, is changed to a dispensing configuration in such a manner that essential parts are not apt to be dr ...

Antonio Ferro: Injector assembly for use in transfusions and perfusions. Crinospital S p A, Finnegan Henderson Farabow & Garrett, November 30, 1976: US03994293 (123 worldwide citation)

An extemporaneous injector assembly for use in transfusions and perfusions comprises a tubular conduit for passage therethrough of a transfusional or perfusional liquid, which is provided with a tubular branch communicating with the conduit for feeding a nourishing solution, a medicinal solution or ...

Walter Elfelt, James H Scruggs: Container lid with foldback drink opening. Anna J Elfelt, Donnelly Maky Renner & Otto, November 30, 1976: US03994411 (110 worldwide citation)

A lid for drink cups includes a drinking flap of limited circumferential extent that may be selectively pivotally opened and closed. Such drinking flap may initially be defined by frangible lateral edges in the lid and may be held in its open position by the pull tab on the flap being inserted in a ...

John E Brunner: Automatic matching method and apparatus. Cincinnati Electronics Corporation, Lowe King Price & Markva, November 30, 1976: US03995237 (102 worldwide citation)

A high-Q load circuit is matched to a drive circuit with an L-type filter network including series and shunt reactances which are both either inductive or capacitive. While a first of the reactances is effectively removed from the network, the value of the second of the reactances is varied until th ...