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Official data from INPI

CONJUNTO DE ELEMENTOS DE TRANSFERÊNCIA DE CALOR

Arquivada/ExtintaInvention PatentPCT · US1988000638

Application data

Number

PI8807382

Type

Invention Patent

Filing

02/22/1988

Publication

03/20/1990

PCT

US1988000638

Progress at the INPI

  1. Filing02/22/88
  2. Publication03/20/90
  3. Examination08/07/90
  4. Allowance04/30/91
  5. Grant11/26/91
  6. Expired09/02/08

The letters patent expired on 09/02/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 09/02/2008. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ABB Air Preheater, INC

US

Abb Alstom Power Inc

US

Alstom Power INC

US

The Air Preheater Company, Inc

US

See this company's full portfolio

Inventors

J. G. (pessoa física)

Technical data

IPC Classification

Priority claims

US

017.954 · 02/24/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 22/02/2003

09/02/2008

RPI 1965

Alteração de nome deferida

#25.4

Alterado de: Abb Alstom Power Inc.

05/28/2002

RPI 1638

Transferência deferida

#25.1

Transferido de: Abb Air Preheater, Inc.

05/07/2002

RPI 1635

Alteração de nome deferida

#25.4

Alterado de: The Air Preheater Company, Inc.

04/16/2002

RPI 1632

Concessão da patente

#16.1

11/26/1991

RPI 1095

Notificação para pagamento de retribuição

#13.1

08/13/1991

RPI 1080

Deferimento

#9.1

04/30/1991

RPI 1065

Solicitação de exame técnico

#4.1

08/07/1990

RPI 1027

Notificação de entrada na fase nacional - PCT

#1.3

03/20/1990

RPI 1010

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