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Official data from INPI

PROCESSO E APARELHO PARA TRATAMENTO DE UMA LAMA COM GÁS CLORO

Em AnáliseInvention Patent

Application data

Number

PI8602738

Type

Invention Patent

Filing

06/11/1986

Publication

02/10/1987

Progress at the INPI

  1. Filing06/11/86
  2. Publication02/10/87
  3. Examination04/04/89
  4. Allowance12/24/91
  5. Grant10/27/92
  6. Expired07/22/08

The letters patent expired on 07/22/2008: 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: 04/04/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Kamyr Inc

US

See this company's full portfolio

Inventors

G. R. (pessoa física)

CA

J. P. (pessoa física)

US

M. S. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

744.678 · 06/14/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

04/04/1989

RPI 963

Publicação do pedido de patente

#3.1

02/10/1987

RPI 851

Pedido de patente depositado

#2.1

12/16/1986

RPI 843

Carta-patente expirada

#21.1

Patente extinta em 11/06/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

10/27/1992

RPI 1143

Notificação para pagamento de retribuição

#13.1

05/19/1992

RPI 1120

Deferimento

#9.1

12/24/1991

RPI 1099

Exigência - art. 36 da LPI

#6.1

01/29/1991

RPI 1052

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