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Official data from INPI

PROCESSO DE LAMINAR NO SENTIDO TRANSVERSAL MATERIAL LAMINADO E APARELHO PARA SUA REALIZAÇÃO.

ConcedidaInvention Patent

Application data

Number

PI8006922

Type

Invention Patent

Filing

10/29/1980

Publication

-

Progress at the INPI

  1. Filing10/29/80
  2. Publication
  3. Examination12/29/81
  4. Allowance08/11/87
  5. Grant02/23/88
  6. Expired11/21/95

The letters patent expired on 11/21/1995: 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: 02/23/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Hitachi, Ltd.

JP

See this company's full portfolio

Inventors

H. A. (pessoa física)

S. T. (pessoa física)

T. K. (pessoa física)

Technical data

IPC Classification

Priority claims

JP

139929/79 · 10/31/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/23/1988

RPI 905

Notificação para pagamento de retribuição

#13.1

12/01/1987

RPI 893

Deferimento

#9.1

08/11/1987

RPI 877

Exigência - art. 36 da LPI

#6.1

12/09/1986

RPI 842

Exigência - art. 36 da LPI

#6.1

01/17/1984

RPI 691

Solicitação de exame técnico

#4.1

12/29/1981

RPI 584

Carta-patente expirada

#21.1

11/21/1995

RPI 1303

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