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Official data from INPI

Sistema de admissão para um motor de combustão interna.

ConcedidaInvention Patent

Application data

Number

PI8101194

Type

Invention Patent

Filing

02/26/1981

Publication

-

Progress at the INPI

  1. Filing02/26/81
  2. Publication
  3. Examination05/18/82
  4. Allowance12/13/83
  5. Grant09/25/84
  6. Expired04/23/96

The letters patent expired on 04/23/1996: 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: 09/25/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Y. K. (pessoa física)

JP

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Inventors

K. T. (pessoa física)

N. M. (pessoa física)

T. M. (pessoa física)

Technical data

IPC Classification

Priority claims

JP

25683/80 · 02/29/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/25/1984

RPI 727

Notificação para pagamento de retribuição

#13.1

04/10/1984

RPI 703

Deferimento

#9.1

12/13/1983

RPI 686

Solicitação de exame técnico

#4.1

05/18/1982

RPI 604

Pedido de patente depositado

#2.1

04/20/1982

RPI 600

Carta-patente expirada

#21.1

04/23/1996

RPI 1325

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