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Official data from INPI

LAMINADOR E PROCESSO PARA LAMINAR UMA CHAPA.

ConcedidaInvention Patent

Application data

Number

PI8006349

Type

Invention Patent

Filing

10/02/1980

Publication

-

Progress at the INPI

  1. Filing10/02/80
  2. Publication
  3. Examination05/17/83
  4. Allowance02/14/84
  5. Grant06/30/87
  6. Expired11/14/95

The letters patent expired on 11/14/1995: 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: 06/30/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Hitachi, Ltd.

JP

See this company's full portfolio

Inventors

T. K. (pessoa física)

Technical data

IPC Classification

Priority claims

JP

128732/79 · 10/04/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/30/1987

RPI 871

Notificação para pagamento de retribuição

#13.1

03/17/1987

RPI 856

110

01/21/1987

RPI 848

120

02/04/1986

RPI 798

Recurso

#12.1

05/22/1984

RPI 709

Deferimento

#9.1

02/14/1984

RPI 695

Solicitação de exame técnico

#4.1

05/17/1983

RPI 656

Carta-patente expirada

#21.1

11/14/1995

RPI 1302

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