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Official data from INPI

TAMPA DE FECHAMENTO PARA FILTRO DE DIÁLISE,E,FILTRO DE DIÁLISE

Prazo de SigiloInvention Patent

Application data

Number

PI8903739

Type

Invention Patent

Filing

07/27/1989

Publication

03/20/1990

Progress at the INPI

  1. Filing07/27/89
  2. Publication03/20/90
  3. Examination06/02/92
  4. Allowance12/20/94
  5. Grant06/27/95
  6. Expired12/22/09

The letters patent expired on 12/22/2009: 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: 11/21/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Fresenius AG

DE

See this company's full portfolio

Inventors

D. S. (pessoa física)

DE

D. M. (pessoa física)

DE

D. R. (pessoa física)

DE

J. S. (pessoa física)

DE

W. W. (pessoa física)

DE

Technical data

IPC Classification

Priority claims

DE

3825573 · 07/28/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

11/21/1989

RPI 996

Carta-patente expirada

#21.1

Patente extinta em 27/07/2004

12/22/2009

RPI 2033

Concessão da patente

#16.1

06/27/1995

RPI 1282

Deferimento

#9.1

12/20/1994

RPI 1255

Exigência - art. 36 da LPI

#6.1

06/14/1994

RPI 1228

Solicitação de exame técnico

#4.1

06/02/1992

RPI 1122

Publicação do pedido de patente

#3.1

03/20/1990

RPI 1010

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