1
Jozsef Nemeth: Floor tile. Wicanders Korkfabriker, December 30, 1980: US04242390 (215 worldwide citation)

Floor tiles are disclosed which comprise a carrier layer and a superimposed floor surface forming layer which is provided with a decorative wear resistant surface. In one embodiment the carrier layer protrudes beyond the floor surface layer on two sides and the floor surface layer protrudes beyond t ...


2
Konrad H Marcus: Remote transmitter and housing. Prince Corporation, Price Heneveld Huizenga & Cooper, December 30, 1980: US04241870 (162 worldwide citation)

A housing mounted between the visors in the headliner of a vehicle includes an access pocket for removably receiving and supplying operating power to a remote transmitter used for opening garage doors. The housing includes an opening into which the garage door transmitter fits and which includes a s ...


3
Norihiko Kotani, Satoru Kawazu: MOS Semiconductor device. Mitsubishi Denki Kabushiki Kaisha, Wenderoth Lind & Ponack, December 30, 1980: US04242691 (139 worldwide citation)

The disclosed MOS transistor includes a channel region formed of a lightly doped semiconductor layer disposed in a surface portion of a heavily doped semiconductor layer subsequently disposed on a lightly doped semiconductor substrate. The channel region may be of the identical or opposite conductiv ...


4
Dietrich W Lubbers, Ernst Guilino: Spectral photometer for medical use in determining skin coloration. Max Planck Gesellschaft zur Forderung der Wissenschaften, Michael J Striker, December 30, 1980: US04241738 (116 worldwide citation)

A housing contains a light source, a monochromator, a photosensitive unit and an oscilloscope-type display. A flexible bundle of fiber-optic elements extends from within the housing out, and is provided at its outer end with a spacing ring. The spacing ring is placed against a skin surface, holding ...


5
Larbi El Bouhnini, Thomas J Fitzpatrick, Donald M Harwick, Robert M Hoffman, Wayne M Knoll: Fiber reinforced composite structural laminate composed of two layers tied to one another by embedded fibers bridging both layers. PPG, United States Gypsum Company, Jones Tullar & Cooper, December 30, 1980: US04242406 (108 worldwide citation)

This invention relates to a structural laminate having a plastic surface finish coat laminated to a structural base which has exceptional bond strength between the structural base and the plastic layer with which it interfaces. The structural base comprises a glass reinforced gypsum layer. The plast ...


6
Lawrence A Smith Jr: Process for separating isobutene from C.sub.4 streams. Chemical Research & Licensing Company, Kenneth H Johnson, December 30, 1980: US04242530 (105 worldwide citation)

A method for the separation of isobutene from a mixture comprising n-butene and isobutene comprising feeding a C.sub.4 stream containing n-butene and isobutene to a distillation column reactor into a feed zone contacting the stream with fixed bed acidic cation exchange resin to form diisobutene whic ...


7
Ernest H Price: Downhole separator for wells. Dennis T Griggs, December 30, 1980: US04241787 (102 worldwide citation)

Method and apparatus for producing oil from a subsurface formation containing both oil and water is disclosed. The oil and water are separated downhole within the well with the separated water being conveyed through a well bore and discharged into a disposal formation without raising it to the surfa ...


8
Robert A Ferrell: Reclosable shipping sack and method. KCL Corporation, Hill Van Santen Steadman Chiara & Simpson, December 30, 1980: US04241865 (91 worldwide citation)

A reclosable sack having a pouring mouth from which discrete pourable contents may be discharged, comprises a primary non-reclosable stitched closure fastener across and closing the mouth against unintentional discharge of the contents and includes means such as chain stitch and rip strip for facili ...


9
Luther I Dickens, William C Nanny: Composite panel structure and method of manufacture. Radva Plastics Corporation, Alvin E Hendricson, December 30, 1980: US04241555 (86 worldwide citation)

A building panel has an expanded plastic core with thin reinforcing strips bonded to front and back surfaces of the core, at least along the edges thereof, and may have a wire grid attached in offset relation to one surface thereof for receiving a material such as concrete. The panel is manufactured ...


10
Harry N Fleischer: Scissor-type surgical stapler. Dressler Goldsmith Shore Sutker & Milnamow, December 30, 1980: US04241861 (84 worldwide citation)

A scissor-type surgical stapler is disclosed in which a pair of pivotally connected forcep handles are used with an elongated cartridge housing at the forward end of one of the handles, this cartridge housing being adapted to hold a staple cartridge containing a plurality of staples positioned in a ...