Patent US5310977A successfully refreshed from Google Patents.
US5310977A
Expired / Lapsed
US
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Configured microwave susceptor
Assignee: 3M Co
•
Filing: 1992-11-23
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Granted: 1994-05-10
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Expires: 2012-11-23
Abstract
Abstract A microwave susceptor having projections such as linear ridges which define circulation channels such as linear grooves. The susceptor may include apertures at the ridge apexes and the groove nadirs for allowing food secretions such as grease and steam, to pass through the susceptor. A strut may be releasably coupled to the susceptor for increasing the structural integrity of the susceptor.
Inventors
- 👤 Victoria S. Stenkamp
- 👤 Curtis L. Larson
- 👤 Pierre H. LePere
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:04
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/34; B65D81/3446; B65D81/24; B65D81/26; B65D81/264; B65D2581/00; B65D2581/34; B65D2581/3401; B65D2581/3402; B65D2581/3412; B65D2581/3413; B65D2581/3416; B65D2581/3437; B65D2581/3439; B65D2581/3455; B65D2581/3456; B65D2581/3463; B65D2581/3464; B65D2581/3466; B65D2581/3471; B65D2581/3472; B65D2581/3474; B65D2581/3477; B65D2581/3478; B65D2581/3479; B65D2581/3483; B65D2581/3486; B65D2581/3494; Y; Y10; Y10S; Y10S99/00; Y10S99/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
62 words
A microwave susceptor comprising a sheet of microwave interactive material adapted for converting microwave energy to heat, said sheet having a multiplicity of alternating substantially parallel ridge apexes and groove nadirs, said ridge apexes adapted for supporting a food item thereon, said sheet adapted for increasing and decreasing the linear distance between sequential ridge apexes by compressing or expanding the pleated sheet.
Claim 2
Dependent Claim
62 words
A microwave susceptor comprising a sheet of microwave interactive material adapted for converting microwave energy to heat, said sheet having a multiplicity of alternating substantially parallel ridge apexes and groove nadirs, said ridge apexes adapted for supporting a food item thereon, said sheet adapted for increasing and decreasing the linear distance between sequential ridge apexes by compressing or expanding the pleated sheet.
Claim 3
Dependent Claim
103 words
A microwavable container for food comprising: a) a microwave transparent material defining a chamber; b) a microwave susceptor retained within said chamber which comprises a substantially uniformly pleated sheet of microwave interactive material adapted for converting microwave energy to heat and having a plurality of substantially parallel linear ridge apexes, said sheet adapted to concentrate the heat generation capacity of the susceptor when said pleated sheet is compressed, and to dissipate the heat generation capacity of the susceptor when said pleated sheet is expanded, and c) a food item retained within the chamber and supported by the ridge apexes of the microwave susceptor.
Claim 4
Dependent Claim
103 words
A microwavable container for food comprising: a) a microwave transparent material defining a chamber; b) a microwave susceptor retained within said chamber which comprises a substantially uniformly pleated sheet of microwave interactive material adapted for converting microwave energy to heat and having a plurality of substantially parallel linear ridge apexes, said sheet adapted to concentrate the heat generation capacity of the susceptor when said pleated sheet is compressed, and to dissipate the heat generation capacity of the susceptor when said pleated sheet is expanded, and c) a food item retained within the chamber and supported by the ridge apexes of the microwave susceptor.
Claim 5
Dependent Claim
62 words
A microwave susceptor comprising a substantially uniformly pleated sheet of microwave interactive material adapted for converting microwave energy to heat and for supporting a food item thereon, said sheet generally adapted to concentrate the heat generation capacity of the susceptor when said pleated sheet is compressed and to dissipate the heat generation capacity of the susceptor when said pleated sheet is expanded.
Claim 6
Dependent Claim
62 words
A microwave susceptor comprising a substantially uniformly pleated sheet of microwave interactive material adapted for converting microwave energy to heat and for supporting a food item thereon, said sheet generally adapted to concentrate the heat generation capacity of the susceptor when said pleated sheet is compressed and to dissipate the heat generation capacity of the susceptor when said pleated sheet is expanded.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-05-09 | 1997-11-08 | 1998-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-05-09 | 2001-11-08 | 2002-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-05-09 | 2005-11-08 | 2006-05-10 | $7700.00 | Window Closed / Lapsed |