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"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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| Number | Title | Issue Date |
| 4937238 | Prevention of mammary carcinoma To reduce the risk of breast cancer, a drug is periodically administered to young mammals before pregnancy in doses of about 1 microgram to 50 micrograms per kilogram of body weight. The drug: (1) competes with and displaces estradiol 17 beta from the mam... | 06/26/1990 |
| 4790751 | Dental viewing apparatus and method To permit more effective viewing during dental surgery of diagnosis, a retractor or probe assembly includes: (1) a cylindrical stainless steel handle about 14 centimeters long and 7 millimeters in diameter to which a mirror may be mounted; and (2) a 15 mi... | 12/13/1988 |
| 4783525 | Preparation of reagent for immune complex isolation To diagnose diseases in patients, a protein complex, RhC, is prepared from horse serum by precipitating a white powder from the serum at a pH of 5.5 and processing to remove lipids at a pH of 8.2 using Tris-HCl as the buffer. It includes two components as... | 11/08/1988 |
| 4767440 | Potting media To prepare an effective potting media from waste plant products, a mixture of high carbon and high nitrogen organic material is mixed with a phosphoric acid solution to maintain a pH of between 5.5 and 7.1 under aerobic conditions, with or without soil. G... | 08/30/1988 |
| 4729947 | DNA sequencing To sequence long strands of DNA, cloned strands having lengths longer than 100 bases are, in one embodiment, marked on one end with biotin. These strands are divided into 4 aliquots and each aliquot: (1) is uniquely chemically treated to randomly terminat... | 03/08/1988 |
| 4683826 | Subsurface application of chemicals In the subsurface application of herbicides, a plurality of upwardly directed nozzles having one millimeter openings are pulled beneath the soil surface behind the trailing side of a sweep in parallel paths two to four centimeters apart while jets of herb... | 08/04/1987 |
| 4492637 | Water separation process To reduce the amount of high quality energy utilized in removing water from a dilute ethanol solution, a two-stage process is used. The first stage removes eighty-five percent of the water using a low temperature apparatus and process and the remainder of... | 01/08/1985 |
| 4457312 | Method and apparatus for providing records of events during a cardiac arrest To provide accurate reconstructable records of the events and therapy administered during a cardiac arrest, flow sheets are attached to the top of a timing clipboard. Each row of the flow sheet matrix indicates a different event and the columns indicate t... | 07/03/1984 |
| 4445788 | Soil probe and method of obtaining moisture, temperature and root distribution of a soil profile To provide a profile of simultaneous moisture, temperature and root density characteristics at different depths of soil, a soil probe is inserted in the soil with a viewing and camera section extending above the soil. Similarly, the probe provides a profi... | 05/01/1984 |
| 4436700 | Autoclavable pipette jar and method of using it To hold pipettes during autoclaving, an autoclavable pipette jar made of stainless steel has the general form of a closed cylindrical container with a flat generally disc-shaped base on one end and a flat top on the other end. Adjacent to the top is an op... | 03/13/1984 |
| 4434789 | Apparatus for treating carcinoma of the uterine cervix Disclosed is an apparatus for treating carcinoma of the uterine cervix by judiciously applying radioactive material immediately adjacent the uterine cervix for an extended period of time empirically determined by the radiologist. The novel apparatus compr... | 03/06/1984 |
| 4427669 | Contraceptive To prevent pregnancy, female mammals are administered 2-hydroxyestradiol or 4-hydroxyestradiol either before or after ovulation but prior to implantation. The 2-hydroxyestradiol or 4-hydroxyestradiol is mixed with a 0.01% ascorbic acid solution in peanut ... | 01/24/1984 |
| 4344251 | Self-irrigating pot for plants To provide water to a plant in a standard pot, a removable, preassembled plastic separator disc fits within the walls of the pot near its bottom to form a soil compartment above it for the roots of the plant and a water reservoir beneath it. Water is supp... | 08/17/1982 |
| 4331131 | Method for treating carcinoma of the uterine cervix Disclosed is a method for treating carcinoma of the uterine cervix by judiciously applying radioactive material immediately adjacent the uterine cervix for an extended period of time empirically determined by the radiologist. The novel method comprises in... | 05/25/1982 |
| 4315149 | Mass spectrometer To increase the sample sensitivity of an ion cyclotron resonance mass spectrometer so that it can analyze small samples, the escape of molecules from an analyzer cell assembly is controlled by a loss reduction means. In the preferred embodiment, the loss ... | 02/09/1982 |
| 4306809 | Polarimeter To measure characteristics such as density and particle-size distributions of a medium that interacts with light, a polarimeter simultaneously develops all 16 elements of the Mueller matrix by modulating polarized monochromatic light with a quarter-wave r... | 12/22/1981 |
| 4306018 | Method of gas-heat exchange To supply oxygen to blood and control its carbon dioxide content, the blood is pumped through a silicone rubber tube wound as a helix around an aluminum cylinder. In a typical use, water at 37° C. is pumped through the cylinder to maintain the temperatur... | 12/15/1981 |
| 4300310 | Identification and sorting of plant heterokaryons To label heterokaryons formed by fusion of different somatic tissue cells, somatic tissue cells from one plant are immersed in a first solution including polysaccharidase and fluorescein isothiocyanate and somatic tissue cells from a different plant are i... | 11/17/1981 |
| 4279998 | Regenerable insoluble support for protein immobilization To permit regeneration of an insoluble support for immobilized proteins, the protein is connected to the support by a spacer arm containing a diazo linkage and when the protein is denatured, the spacer arm is broken by reducing the diazo linkage to remove... | 07/21/1981 |
| 4270518 | Controller for condenser-side-storage solar heat-pump systems To improve the efficiency of a condenser-side-storage solar heat-pump system, the controller for the heat pump measures the temperature outside the house and: (1) subtracts it from the temperature within a collector for the solar heat system; and (2) adds... | 06/02/1981 |
| 4223479 | Feedback controlled roller applicator To apply herbicide to weeds extending above a crop, a nylon carpet on the cylinder of a roller applicator has herbicide applied to it as a tractor or other vehicle carries it through a field. The roller is held just above the crop where it contacts weeds ... | 09/23/1980 |
