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Public domain · Fee lapsed

Heating bag for bakery products

US-9781987-B2

Abstract

The heater bag for bakery products comprises a flexible or semi-rigid casing defining a bottom ( 111 ), side walls ( 110 ), an opening ( 112 ), and means ( 113 ) for selectively closing the opening ( 112 ). At least one semi-flexible heater plate ( 121, 122 ) having an electrical heater element ( 141, 142 ) incorporated therein is itself inserted in a pocket of natural material comprising cotton, flax, and wool, said pocket constituting a portion of the flexible or semi-rigid casing of the bag. For each heater plate ( 121, 122 ), the heating power per cm 2 lies in the range 0.13 W to 0.24 W.

Patent figures（5）

US-9781987-B2 fig 1
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US-9781987-B2 fig 2
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US-9781987-B2 fig 3
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US-9781987-B2 fig 4
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US-9781987-B2 fig 5
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Legal status & events

2017-09-20
Patent granted (STCF)
2021-05-31
Maintenance fee reminder mailed (FEPP)
2021-11-15
Patent lapsed for failure to pay maintenance fees (LAPS) - PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES
2021-12-07
Lapsed due to failure to pay maintenance fee (FP) - Effective date: 2021-10-10
Notice

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