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Official data from INPI

PROCESSO PARA A PRODUÇÃO DE ÁCIDO SULFÚRICO E HIDRÓXIDO DE METAL ALCALINO

Arquivada/ExtintaInvention PatentPCT · SE1993000157

Application data

Number

PI9306078

Type

Invention Patent

Filing

02/25/1993

Publication

11/18/1997

PCT

SE1993000157

Progress at the INPI

  1. Filing02/25/93
  2. Publication11/18/97
  3. Examination
  4. Allowance11/09/99
  5. Grant05/16/00
  6. Expired07/09/13

The letters patent expired on 07/09/2013: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 07/09/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Eka Nobel AB

SE

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Inventors

B. S. (pessoa física)

SE

G. S. (pessoa física)

SE

Technical data

IPC Classification

Priority claims

SE

9200804-4 · 03/16/1992

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 25/02/2013

07/09/2013

RPI 2218

Concessão da patente

#16.1

05/16/2000

RPI 1532

Deferimento

#9.1

11/09/1999

RPI 1505

Exigência - art. 36 da LPI

#6.1

06/15/1999

RPI 1484

Notificação de entrada na fase nacional - PCT

#1.3

11/18/1997

RPI 1407

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