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 |
| 4364963 | Food preparation process An improved food preparation process is disclosed. In order to practice the process, a container is provided which has a centrally-depressed receptacle with an outwardly and downwardly extending rim. A food filling is first deposited in the container rece... | 12/21/1982 |
| 4265919 | Process for producing a food product A process for producing a frozen, pre-prepared food product is disclosed. In order to practice the process, a container is provided which has a centrally-depressed receptacle with an outwardly and downwardly extending rim. A food filling is first deposite... | 05/05/1981 |
| 4191881 | Food oven A rotary type oven for articles of food having a broiling zone with a radiant electrical heater, a baking zone and a toasting zone having a convective electrical heater; the oven is of the helical track type with the zones being one above another.... | 03/04/1980 |
| 4184421 | Foil sheet for cooking an item of food A food cooking sheet made of flexible metal foil is disclosed, the sheet has an imperforate annular margin forming the outer periphery of the sheet and there is a plurality of webs extending across a perforated center section, the webs structurally connec... | 01/22/1980 |
| 4164591 | Method of heating a food article A method of heating a food article of the layered type having a crust and a topping of a higher specific heat than the crust, an example of which is a pizza, has the steps of placing the food while in a refrigerated state into an oven, then broiling the t... | 08/14/1979 |
