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Official data from INPI

Conjunto de conexão

Arquivada/ExtintaInvention Patent

Application data

Number

PI9101848

Type

Invention Patent

Filing

05/07/1991

Publication

12/17/1991

Progress at the INPI

  1. Filing05/07/91
  2. Publication12/17/91
  3. Examination03/29/94
  4. Allowance08/26/97
  5. Grant07/28/98
  6. Expired06/04/13

The letters patent expired on 06/04/2013: 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: 06/04/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Wilkhahn Wilkening + Hahne GmbH + Co.

DE

Inventors

K. R. (pessoa física)

DE

Technical data

IPC Classification

Priority claims

DE

P 40 16 486.1 · 05/22/1990

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 07/05/2011

06/04/2013

RPI 2213

Concessão da patente

#16.1

07/28/1998

RPI 1440

Deferimento

#9.1

08/26/1997

RPI 1395

Solicitação de exame técnico

#4.1

03/29/1994

RPI 1217

Publicação do pedido de patente

#3.1

12/17/1991

RPI 1098

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