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Official data from INPI

BUCHA DE EXPANSÃO

Em AnáliseInvention PatentPCT · EP1987000726

Application data

Number

PI8707546

Type

Invention Patent

Filing

11/24/1987

Publication

03/14/1989

PCT

EP1987000726

Progress at the INPI

  1. Filing11/24/87
  2. Publication03/14/89
  3. Examination11/28/89
  4. Allowance10/09/90
  5. Grant04/30/91
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 11/28/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Tox-Duebel Werk, Richard W Heckhausen GmbH & Co KG

DE

Inventors

J. R. (pessoa física)

Technical data

IPC Classification

Priority claims

DE

P3640312 · 11/26/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

11/28/1989

RPI 997

Notificação de entrada na fase nacional - PCT

#1.3

03/14/1989

RPI 960

Carta-patente expirada

#21.1

Patente extinta em 24/11/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

04/30/1991

RPI 1065

Notificação para pagamento de retribuição

#13.1

01/22/1991

RPI 1051

Deferimento

#9.1

10/09/1990

RPI 1036

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