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Official data from INPI

PROCESSO E DISPOSITIVO PARA A TROCA CONTÍNUA DE SOLUÇÕES AQUOSAS DURANTE O TRATAMENTO QUÍMICO OU ELETROLÍTICO DE SUPERFÍCIE

Arquivada/ExtintaInvention Patent

Application data

Number

PI9004088

Type

Invention Patent

Filing

08/17/1990

Publication

02/25/1992

Progress at the INPI

  1. Filing08/17/90
  2. Publication02/25/92
  3. Examination12/20/94
  4. Allowance08/04/98
  5. Grant12/29/98
  6. Expired01/29/13

The letters patent expired on 01/29/2013: 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: 01/29/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Atotech Deutschland GMBH

DE

H. H. (pessoa física)

DE

See this company's full portfolio

Inventors

H. H. (pessoa física)

DE

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 17/08/2010

01/29/2013

RPI 2195

Transferência deferida

#25.1

Transferido de: Hans Henig

11/13/2001

RPI 1610

Concessão da patente

#16.1

12/29/1998

RPI 1460

Deferimento

#9.1

08/04/1998

RPI 1441

Exigência - art. 36 da LPI

#6.1

12/30/1997

RPI 1410

Solicitação de exame técnico

#4.1

12/20/1994

RPI 1255

Publicação do pedido de patente

#3.1

02/25/1992

RPI 1108

Pedido de patente depositado

#2.1

02/19/1991

RPI 1055

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