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Official data from INPI

Aparelho e processo para fabricação de ácido sulfúrico

Arquivada/ExtintaInvention PatentPCT · DK1989000129

Application data

Number

PI8907463

Type

Invention Patent

Filing

05/18/1989

Publication

05/21/1991

PCT

DK1989000129

Progress at the INPI

  1. Filing05/18/89
  2. Publication05/21/91
  3. Examination02/25/92
  4. Allowance05/20/97
  5. Grant07/28/98
  6. Expired12/26/12

The letters patent expired on 12/26/2012: 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: 12/26/2012. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Haldor Topsoe A/S

DK

See this company's full portfolio

Inventors

S. P. (pessoa física)

DK

Technical data

IPC Classification

Priority claims

DK

2989/88 · 06/02/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 18/05/2009

12/26/2012

RPI 2190

Concessão da patente

#16.1

07/28/1998

RPI 1440

Deferimento

#9.1

05/20/1997

RPI 1381

15.18

04/22/1997

RPI 1377

Exigência - art. 36 da LPI

#6.1

08/27/1996

RPI 1343

15.18

10/19/1993

RPI 1194

15.18

09/21/1993

RPI 1190

15.9

02/25/1992

RPI 1108

Solicitação de exame técnico

#4.1

02/25/1992

RPI 1108

Notificação de entrada na fase nacional - PCT

#1.3

05/21/1991

RPI 1068

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