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Official data from INPI

Processo para a remoção de SO2 de uma corrente gasosa

Em AnáliseInvention Patent

Application data

Number

PI8700924

Type

Invention Patent

Filing

02/26/1987

Publication

12/22/1987

Progress at the INPI

  1. Filing02/26/87
  2. Publication12/22/87
  3. Examination06/07/88
  4. Allowance11/08/94
  5. Grant06/27/95
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 06/07/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Norton Company

US

See this company's full portfolio

Inventors

F. J. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

835.842 · 03/03/1986

US

899.706 · 08/22/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

06/07/1988

RPI 920

Publicação do pedido de patente

#3.1

12/22/1987

RPI 896

Pedido de patente depositado

#2.1

06/16/1987

RPI 869

Carta-patente expirada

#21.1

Patente extinta em 26/02/2002

07/29/2008

RPI 1960

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

05/03/1994

RPI 1222

Conhecimento de parecer técnico

#7.1

05/19/1992

RPI 1120

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