patentgrep
SearchCompaniesTechnologiesAPIPricingDocs
DocsGet an API key
  1. Technology classes
  2. /F · Mechanical engineering
  3. /F22 · Steam generation
  4. /F22B · Methods of steam generation
  5. /F22B 31/00 · Modifications of boiler construction, or of tube systems, dependent on installation of
  6. /F22B 31/0007 · Modifications of boiler construction, or of tube systems, dependent on installation of
  7. /F22B 31/0046 · For boilers of the shell type
  8. /F22B 31/0053
F22B 31/0053

With auxiliary water tubes

Official title: {with auxiliary water tubes}

F22B31/0053 (With auxiliary water tubes) appears on 12 US grants and 0 published applications in this corpus.

Search patents in F22B

Where it sits

  1. FMechanical engineering
  2. F22Steam generation
  3. F22BMethods of steam generation
  4. F22B 31/00Modifications of boiler construction, or of tube systems, dependent on installation of
  5. F22B 31/0007Modifications of boiler construction, or of tube systems, dependent on installation of
  6. F22B 31/0046For boilers of the shell type
  7. F22B 31/0053With auxiliary water tubes
Granted patents
12
Published applications
0
Assignees
10
Inventors
17
Latest grant
1 Sep 1992

Filings by year

Granted patentsPublished applications
F22B 31/0053: granted patents and published applications per publication year
YearGranted patentsPublished applications
198020
198130
198210
198310
198410
198510
198600
198700
198810
198900
199000
199110
199210

1980198119821983198419851986198719881989199019911992

By publication year. Applications have been published since 2001.

Recent patents

  • Device for extracting particulate materials of a fluidized bed from the fluidization enclosure1 Sep 1992US 5,143,697 ACharbonnages de France
  • Process and apparatus for incinerating wet refuse30 Apr 1991US 5,010,830 AUbe Industries, Ltd.
  • Fluidized-bed heat generator with improved means for ash removal and heat recovery12 Apr 1988US 4,736,711 ACharbonnages de France
  • Fluidized bed shell boilers31 Dec 1985US 4,561,385 AEnergy Equipment Corporation
  • Fast fluidized bed reactor and method of operating the reactor3 Jul 1984US 4,457,289 AYork-Shipley, Inc.

No published applications in this class yet.

Most cited

By later US patents
  • Circulating fluidized bed boiler33US 4,273,073 ADeborah Fluidised Combustion Limited · 1981
  • Fast fluidized bed reactor and method of operating the reactor33US 4,457,289 AYork-Shipley, Inc. · 1984
  • Circulating fluidized bed boiler19US 4,267,801 ADeborah Fluidised Combustion Limited · 1981
  • Feed of material to fluidized beds17US 4,279,222 AFlameless Furnaces Limited · 1981
  • Process and apparatus for incinerating wet refuse16US 5,010,830 AUbe Industries, Ltd. · 1991

Top assignees

Documents
  • CFCharbonnages de France2
  • DFDeborah Fluidised Combustion Limited2
  • EEEnergy Equipment Corporation1
  • FFFlameless Furnaces Limited1
  • IFInstitut Francais du Petrole1
  • JBJohnston Boiler Company1
  • Ube Industries, Ltd.1
  • VTVosper Thornycroft Limited1
  • VTVosper Thornycroft (UK) Limited1
  • YSYork-Shipley, Inc.1

Often classified with

  • F23CMethods or apparatus for combustion using fluid fuel or solid fuel suspended7
  • B01JChemical or physical processes5
  • F23GCremation furnaces2
  • F23MCasings, linings, walls or doors specially adapted for combustion chambers1
  • F27BFurnaces, kilns, ovens or retorts in general1
  • Y02EClean energy generation and storage1
  • Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests1

Documents that also carry the other class.

patentgrep

Search every US patent grant since 1976 and every published application since 2001. Updated weekly from USPTO.

Product

  • Search
  • New this week
  • Where the data comes from
  • Pricing

Browse

  • Companies
  • Technology classes

Developers

  • API docs
  • PatentsView-compatible API
  • MCP server
  • Changelog

About

  • Privacy
  • Terms
© 2026 patentgrepData from USPTO bulk files