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Official data from INPI

PROCESSO PARA A PREPARAÇÃO DE ÁCIDO 4,4` -DINITROESTILBENO-2,2` -DISSULFÔNICO

PublicadaInvention Patent

Application data

Number

PI8802886

Type

Invention Patent

Filing

06/13/1988

Publication

02/28/1989

Progress at the INPI

  1. Filing06/13/88
  2. Publication02/28/89
  3. Examination05/14/91
  4. Allowance06/06/95
  5. Grant12/26/95
  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: 02/28/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Ciba-Geigy AG

CH

Ciba Specialty Chemicals Holding Inc.- Ciba Spezialitätenchemie Holding AG - Ciba Spécialités Chimiques Holding SA

CH

See this company's full portfolio

Inventors

D. G. (pessoa física)

CH

Technical data

IPC Classification

Priority claims

CH

1142/88 · 03/25/1988

CH

3098/87 · 08/12/1987

CH

4228/87 · 10/29/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

02/28/1989

RPI 958

Pedido de patente depositado

#2.1

11/08/1988

RPI 942

Carta-patente expirada

#21.1

Patente extinta em 13/06/2003

09/02/2008

RPI 1965

Alteração de nome deferida

#25.4

Alterado de: Ciba SC Holding AG

02/17/1999

RPI 1467

Republicação - titular

#25.11

Referência: RPI 1455 de 24/11/1998; item (71); código 25.1 @ Transferido de: Ciba Geigy Ag

01/05/1999

RPI 1461

Transferência deferida

#25.1

Transferido de: Ciba-Geigy Ag

11/24/1998

RPI 1455

Concessão da patente

#16.1

12/26/1995

RPI 1308

Notificação para pagamento de retribuição

#13.1

10/17/1995

RPI 1298

Deferimento

#9.1

06/06/1995

RPI 1279

Exigência - art. 36 da LPI

#6.1

09/20/1994

RPI 1242

Solicitação de exame técnico

#4.1

05/14/1991

RPI 1067

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