Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 7377280 | Tobacco curing barn A facility and method steps for air curing tobacco in an enclosure include hanging the tobacco in the enclosure-having at least one vertically arranged air duct positioned in a central portion of the enclosure, at least one in-line fan positioned in a vertical porti... | 05/27/2008 |
| 6846177 | Method and apparatus for facilitating a tobacco curing process Apparatus and method for facilitating a tobacco curing process, with the apparatus being for use in a tobacco barn, with the tobacco barn having a plurality of internal cross members for supporting tobacco leaves during curing. The apparatus includes a plenum for at... | 01/25/2005 |
| 6805134 | Tobacco processing Tobaccos are cured in a manner so as to provide tobaccos having extremely low tobacco specific nitrosamine (TSNA) contents. Harvested Virginia tobacco is subjected to flue-curing so as to provide flue-cured tobacco. During the curing processing steps, contact of the... | 10/19/2004 |
| 6786220 | Tobacco curing barn A facility and method steps for air curing tobacco in an enclosure include hanging the tobacco in the enclosure having at least one vertically arranged air duct positioned in a central portion of the enclosure, at least one in-line fan positioned in a vertical porti... | 09/07/2004 |
| 6338348 | Method of treating tobacco to reduce nitrosamine content, and products produced thereby Methods of reducing the content of and preventing formation of carcinogenic nitrosamines in harvested leafy plants such as tobacco and marijuana, are disclosed. The methods are directed to subjecting the plant to microwave radiation, at appropriate times ... | 01/15/2002 |
| 6311695 | Method of treating tobacco to reduce nitrosamine content, and products produced thereby Methods of reducing the content of and preventing formation of carcinogenic nitrosamines in harvested leafy plants such as tobacco and marijuana, are disclosed. The methods are directed to subjecting the plant to microwave and/or higher frequency radiatio... | 11/06/2001 |
| 5685710 | Barn and procedure for Virginia type tobacco curing The objects of the present invention are a barn and a procedure for curing Virginia type tobacco. The barn consists of an air heating device with an impulsion fan (9) connected by means of an inlet duct (10) to several curing units (1-8) where the Virgini... | 11/11/1997 |
| 4751873 | Exhaust heated trailer A heating system for a transportable enclosure comprising a first side wall and a second side wall; the first side wall being an exterior wall and the second side wall being an interior wall; a third side wall connected to and facing the second side wall,... | 06/21/1988 |
| 4664131 | Apparatus for transporting, storing and blending small bales of tobacco An arrangement for transporting, storing, and blending tobacco employs a plurality of ventilated containers, each containing bales of a designated grade of tobacco. Containers are stored side-by-side and stacked several containers high, and rows of stacke... | 05/12/1987 |
| 4609346 | Environmental control system for large volume structures There is disclosed an environmental control system for a large volume structure (one horizontal dimension of at least 60 feet) having an air tempering unit including a horizontal cylindrical duct of about three feet diameter with an axial flow propellor f... | 09/02/1986 |
| 4559956 | Method of and apparatus for curing tobacco In the curing of tobacco leaf in a curer heated air is circulated through the curer and controlled so that a first temperature is maintained in the curer for a given period of time. During this period the relative humidity level is reduced to a desired le... | 12/24/1985 |
| 4520579 | Tobacco bin A tobacco curing bin for use in a tobacco curing kiln is provided, the said bin comprising a box-like structure with opposing ends, a top, a front, a back, a floor, and having tynes adapted to pierce and support the tobacco leaves therein; each said end b... | 06/04/1985 |
| 4482315 | Bulk tobacco barn furnace An auxiliary wood furnace for a bulk curing tobacco barn is arranged for installation in a basement immediately below the conventional oil or gas fired furnace for ease of barn modification and adaptation to burning wood as the source of heat.... | 11/13/1984 |
| 4470422 | Curing of tobacco leaf A method of, and apparatus for, curing tobacco leaf in a curer barn. Air is caused to circulate through the barn to dry the leaf. The temperature of the air is controlled to maintain a predetermined temperature or humidity difference between upper and low... | 09/11/1984 |
| 4424024 | Bulk curing with solid fuel Apparatus for bulk curing tobacco comprising a barn having a heat exchanger therein defining interior flow paths for heated water and exterior heat exchange surfaces disposed within the curing air flow path within the barn, hot water storage tank unit, a ... | 01/03/1984 |
| 4414904 | Waste-burning furnace The furnace includes an upstanding hopper-like member having an increasing cross-sectional area from a fuel inlet at its upper end to a hollow box-like grate releasably and removably mounted within its lower end portion at an elevation slightly below the ... | 11/15/1983 |
| 4321758 | Heat cycling apparatus and method A heat cycling apparatus and method is provided for heating at least two chambers utilizing a pressurized heat source. The heated air is directed first to one chamber and then to the other on a predetermined repetitive time cycle.... | 03/30/1982 |
| 4263720 | System and method for monitoring air flow in a bulk tobacco curing and drying structure The present invention relates to a system and method of monitoring air flow in a bulk tobacco curing and drying structure wherein the system and method is designed to actuate an alarm device in response to the air flow within the bulk tobacco curing and d... | 04/28/1981 |
| 4245657 | Method and apparatus for loading bulk tobacco barns Method and apparatus for loading and unloading a bulk curing tobacco barn so that large heavy containers filled with tobacco leaves will be properly positioned in the barn in a close front-to-back relationship.... | 01/20/1981 |
| 4212634 | Auxiliary heating system for a bulk tobacco barn The present invention entails a bulk tobacco barn having a generally enclosed drying area and a forced air heating system associated directly with the barn for generating a system of air and circulating the air through tobacco supported within the drying ... | 07/15/1980 |
| 4206554 | Heat cycling apparatus and method for bulk curing tobacco A heat cycling apparatus and method is provided for a bulk tobacco curing barn having at least two chambers in which the tobacco is cured in bulk utilizing a pressurized heat source. The heated curing air is directed first to one chamber and then to the o... | 06/10/1980 |
| 4192323 | Apparatus and method for automatically controlling curing conditions in a tobacco curing barn An improved apparatus and method for bulk curing tobacco in which the temperature conditions in the tobacco curing barn are automatically controlled by heating the air being circulated through the barn in a controlled manner to maintain a predetermined di... | 03/11/1980 |
| 4156974 | Combination plant seedling-bulk tobacco support structure The present invention relates to a material handling device that is adapted to have utility in both a greenhouse operation and a bulk tobacco curing and drying structure. More particularly, in use with a greenhouse, the material handling device of the pre... | 06/05/1979 |
| 4136465 | Tobacco bulk curing container sections and composite barn construction formed thereby A tobacco bulk curing barn construction including a furnace section and a plurality of portable barn sections each having imperforate side walls and top wall that form substantially complete exterior walls and roof of an integral transverse section of a c... | 01/30/1979 |
| 4123221 | Bulk tobacco curing and drying structure The present invention relates to a bulk tobacco curing and drying structure that comprises an elongated main housing having a cross sectional area substantially arcuate shaped and adapted to receive and support bulk tobacco or other crop material therein ... | 10/31/1978 |
| 4114288 | Bulk cure tobacco barn with improvements in construction for optimizing heating efficiency Incoming fresh air, which is introduced for heating in the furnace of a bulk curing barn for tobacco, travels the length of the barn in heat exchange relationship in a direction opposite to that of the hot, moist exhaust air leaving the curing chamber. Th... | 09/19/1978 |
| 4109395 | Greenhouse, drying, storing nursery system This invention relates to a greenhouse, drying, storing and nursery system and entails a simple multi-purpose structure which includes the capability to effectively utilize solar energy within a greenhouse and is adapted to control temperature, humidity a... | 08/29/1978 |
| 4097227 | Air moving device with oil fired heating apparatus Apparatus for drying and/or curing cereal grains, tobacco and other materials, elements of which may be ingested by human beings, comprises a tube defining a flow passage in the inlet end of which is positioned a device for moving a pressured flow of air ... | 06/27/1978 |
| 4021928 | Cross-flow modular tobacco curing system A curing module is provided of generally rectangular solid configuration of which the bottom is imperforate and includes runners to facilitate lifting by fork lift; the top is imperforate with means for minimizing air leakage between the tobacco and top i... | 05/10/1977 |
| 4011041 | Tobacco curing and drying apparatus Leaf tobacco or the like in a substantially airtight enclosure is cured and dried by circulating through the enclosure air that is controllably heated by a forced air fuel burner located in an elongated vertically oriented duct outside the enclosure. The ... | 03/08/1977 |
| 3999303 | Apparatus and method for tobacco handling and curing A tobacco handling and curing system is provided for in-the-field loading of tobacco leaves into a rectangular curing box and for securing the tobacco leaves within the box by means of a plurality of spikes. The curing box is transferred to a tobacco barn... | 12/28/1976 |
| 3972674 | Crop drying apparatus An apparatus and method of drying crops, the apparatus having a central heating system in which air is forced in a vertical path, downwardly, by a blower, across a heater and into a lower plenum chamber. A flapper valve in the plenum chamber regulates the... | 08/03/1976 |
| 3935959 | Container for bulk tobacco An apparatus for receiving a large quantity of green tobacco leaves in bulk form with an intermediate screen separating portions of the leaves along the entire length of the container and with a plurality of independent support rods for supporting the tob... | 02/03/1976 |
| 3935648 | Tobacco curing apparatus and method A plurality of foraminous wedge-shaped tobacco leaf containers with leaf impaling means are arranged in a circular array on a plenum foundation having connections with an external burner and blower assembly. A center passage for hot curing air is surround... | 02/03/1976 |
| 3932946 | Modular tobacco handling and curing system and method A tobacco handling and curing system and method is provided and in one aspect includes a curing container of generally rectangular solid configuration of which four side walls are generally imperforate and a pair of opposed side walls are perforate for th... | 01/20/1976 |
