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...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 7318432 | Solar collector plate method for safeguarding the operation of a solar collector and method for manufacturing a solar collector plate A solar collector plate (2) has a solar radiation receiving front absorber plane (3) that is wiped at its rear side by a cooling liquid (4) flowing in channels (5). Cavities (7), preferably behind the channels (5) and integr... | 01/15/2008 |
| 6099931 | Insulation system In order to provide an insulation system for internal thermal insulation of a pressure chamber which can be subjected to pressure by a gas flow, the system being constructed for arrangement at an inner surface of an outer jacket of the pressure chamber an... | 08/08/2000 |
| 6005185 | Coolant sealing structure for a solar cell A coolant sealing structure for a solar cell of which the sealing property is maintained with high reliability in use for a long period. A solar cell has its light receiving surface and a reinforced portion formed around the fringe portion of the light re... | 12/21/1999 |
| 5850831 | Loose-tight-loose twist, twisted-tape insert solar central receiver This invention reduces a molten salt, solar central receiver's size, pressure loss and cost by using a loose-tight-loose twist, twisted-tape insert inside the receiver's tubes to enhance the tube's heat transfer coefficient. This twist staging is designed... | 12/22/1998 |
| 5673521 | Rolled roof vent and method of making same An improved roll-form vent for buildings comprises a sequentially thermoformed polymeric vent which provides multiple venting air flow paths between the interior of a building and ambient atmosphere. The vent includes projections extending from a web and ... | 10/07/1997 |
| 4372856 | Process and system for anaerobic treatment of waste The invention provides for a sealed mix tank having two chambers: one chamber mixes waste material and water to form a slurry and collect gas, particularly ammonia gas, during the digestive process; and, a second chamber stores water used for mixing. A cl... | 02/08/1983 |
| 4303060 | Collector panel for solar heating system The disclosure is of a metal panel forming part of a solar heating system, having interconnected longitudinal and transverse passages through which the heat exchange fluid flows.... | 12/01/1981 |
| 4235287 | Heat exchange panel A heat exchange panel having a desired system of internal tubular passageways is described, wherein the internal passageways include opposed headers connected by connecting portions of said passageways extending therebetween. The headers are designed to p... | 11/25/1980 |
| 4122828 | Solar energy collector for direct air heating A solar energy heat collector and use system wherein heat is directly absorbed into a moving column of air and stored in the structure thereof dependent upon the availability of solar radiation and time period of use of said heated air as related to said ... | 10/31/1978 |
| 4067316 | Solar energy collector The invention relates to a solar energy collector comprising solar energy absorbing material within chamber having a transparent wall, solar energy being transmitted through the transparent wall, and efficiently absorbed by the absorbing material, for tra... | 01/10/1978 |
