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Official data from INPI

LAMINADOR DE MÚLTIPLOS CILINDROS

Em AnáliseInvention Patent

Application data

Number

PI8707418

Type

Invention Patent

Filing

07/31/1987

Publication

11/01/1988

Progress at the INPI

  1. Filing07/31/87
  2. Publication11/01/88
  3. Examination03/07/89
  4. Allowance06/14/94
  5. Grant11/29/94
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 03/07/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Hitachi, Ltd

JP

See this company's full portfolio

Inventors

K. K. (pessoa física)

JP

T. S. (pessoa física)

JP

T. K. (pessoa física)

JP

T. K. (pessoa física)

JP

Technical data

IPC Classification

Priority claims

JP

61-185121 · 08/08/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

03/07/1989

RPI 959

Notificação de entrada na fase nacional - PCT

#1.3

11/01/1988

RPI 941

Carta-patente expirada

#21.1

Patente extinta em 31/07/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

11/29/1994

RPI 1252

Notificação para pagamento de retribuição

#13.1

10/18/1994

RPI 1246

Deferimento

#9.1

06/14/1994

RPI 1228

Exigência - art. 36 da LPI

#6.1

11/03/1993

RPI 1196

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