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Official data from INPI

CARTUCHO DE GRAFITA

Em AnáliseInvention Patent

Application data

Number

PI8602348

Type

Invention Patent

Filing

05/22/1986

Publication

01/21/1987

Progress at the INPI

  1. Filing05/22/86
  2. Publication01/21/87
  3. Examination10/04/88
  4. Allowance02/13/90
  5. Grant09/25/90
  6. Expired07/22/08

The letters patent expired on 07/22/2008: 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: 08/29/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Kotobuki & Co., Ltd.

JP

See this company's full portfolio

Inventors

H. K. (pessoa física)

JP

Y. M. (pessoa física)

JP

Technical data

IPC Classification

Priority claims

JP

75697/85 · 05/23/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Conhecimento de parecer técnico

#7.1

08/29/1989

RPI 984

Solicitação de exame técnico

#4.1

10/04/1988

RPI 937

Publicação do pedido de patente

#3.1

01/21/1987

RPI 848

Pedido de patente depositado

#2.1

11/11/1986

RPI 838

Carta-patente expirada

#21.1

Patente extinta em 22/05/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

09/25/1990

RPI 1034

Notificação para pagamento de retribuição

#13.1

06/05/1990

RPI 1021

Deferimento

#9.1

02/13/1990

RPI 1006

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