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Official data from INPI

SEM TITULO

Em AnáliseInvention Patent

Application data

Number

PI8301087

Type

Invention Patent

Filing

03/04/1983

Publication

11/22/1983

Progress at the INPI

  1. Filing03/04/83
  2. Publication11/22/83
  3. Examination01/31/84
  4. Allowance03/11/86
  5. Grant09/30/86
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 04/05/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

J. S. Staedtler Gmbh & CO.

DE

Inventors

B. E. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.4

04/05/1988

RPI 911

Concessão da patente

#16.1

09/30/1986

RPI 832

Notificação para pagamento de retribuição

#13.1

07/01/1986

RPI 819

Deferimento

#9.1

03/11/1986

RPI 803

6.2

03/26/1985

RPI 753

Solicitação de exame técnico

#4.1

01/31/1984

RPI 693

Publicação do pedido de patente

#3.1

11/22/1983

RPI 683

Pedido de patente depositado

#2.1

04/19/1983

RPI 652

Carta-patente expirada

#21.1

Patente extinta em 04/03/98

07/01/2008

RPI 1956

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