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Official data from INPI

PROCESSO PARA TRATAMENTO DE LAMA RESIDUAL

Em AnáliseInvention Patent

Application data

Number

PI8803849

Type

Invention Patent

Filing

08/04/1988

Publication

02/21/1989

Progress at the INPI

  1. Filing08/04/88
  2. Publication02/21/89
  3. Examination11/07/89
  4. Allowance11/08/94
  5. Grant06/27/95
  6. Expired09/02/08

The letters patent expired on 09/02/2008: 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: 11/07/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Peroxid-Chemie GmbH

DE

Solvay Interox GmbH

DE

See this company's full portfolio

Inventors

D. G. (pessoa física)

DE

Technical data

IPC Classification

Priority claims

DE

P 37 26 020.0 · 08/05/1987

DE

P 38 16 989.4 · 05/18/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

11/07/1989

RPI 994

Publicação do pedido de patente

#3.1

02/21/1989

RPI 957

Pedido de patente depositado

#2.1

01/03/1989

RPI 950

Carta-patente expirada

#21.1

Patente extinta em 04/08/2003

09/02/2008

RPI 1965

Transferência deferida

#25.1

12/30/1997

RPI 1410

Concessão da patente

#16.1

06/27/1995

RPI 1282

Notificação para pagamento de retribuição

#13.1

03/14/1995

RPI 1267

Deferimento

#9.1

11/08/1994

RPI 1249

Exigência - art. 36 da LPI

#6.1

06/07/1994

RPI 1227

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