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Official data from INPI

REGISTRADOR

Em AnáliseInvention Patent

Application data

Number

PI8404349

Type

Invention Patent

Filing

09/01/1983

Publication

07/30/1985

Progress at the INPI

  1. Filing09/01/83
  2. Publication07/30/85
  3. Examination12/10/85
  4. Allowance05/24/88
  5. Grant05/29/90
  6. Expired08/19/08

The letters patent expired on 08/19/2008: 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: 09/26/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

YOKOGAWA HOKUSHIN ELECTRIC [JP]

Inventors

S. T. (pessoa física)

S. T. (pessoa física)

T. M. (pessoa física)

T. H. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

110

09/26/1989

RPI 988

Recurso

#12.1

09/20/1988

RPI 935

Deferimento

#9.1

05/24/1988

RPI 918

14.4

01/05/1988

RPI 898

Solicitação de exame técnico

#4.1

12/10/1985

RPI 790

Publicação do pedido de patente

#3.1

07/30/1985

RPI 771

Pedido de patente depositado

#2.1

11/06/1984

RPI 733

Carta-patente expirada

#21.1

Patente extinta em 30/08/99

08/19/2008

RPI 1963

Concessão da patente

#16.1

05/29/1990

RPI 1020

Notificação para pagamento de retribuição

#13.1

01/23/1990

RPI 1003

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