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Official data from INPI

CUNHA CHANFRADA DUPLA

PublicadaInvention Patent

Application data

Number

PI8901278

Type

Invention Patent

Filing

03/20/1989

Publication

11/07/1989

Progress at the INPI

  1. Filing03/20/89
  2. Publication11/07/89
  3. Examination08/21/90
  4. Allowance11/29/94
  5. Grant07/25/95
  6. Expired12/15/09

The letters patent expired on 12/15/2009: 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: 11/07/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Asea Brown Boveri AG

CH

Asea Brown Boveri AG (em francês: Asea Brown Boveri SA; em inglês; Asea Brown Boveri Ltd)

CH

See this company's full portfolio

Inventors

J. S. (pessoa física)

CH

Technical data

IPC Classification

Priority claims

CH

1060/88 · 03/21/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

11/07/1989

RPI 994

Pedido de patente depositado

#2.1

05/09/1989

RPI 968

Carta-patente expirada

#21.1

Patente extinta em 20/03/2004

12/15/2009

RPI 2032

Concessão da patente

#16.1

07/25/1995

RPI 1286

Notificação para pagamento de retribuição

#13.1

04/04/1995

RPI 1270

Deferimento

#9.1

11/29/1994

RPI 1252

Solicitação de exame técnico

#4.1

08/21/1990

RPI 1029

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