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Official data from INPI

PROCESSO PARA A PREPARAÇÃO DE AMIDAS DO ÁCIDO 3,3-DI- ARILACRÍLICO

PublicadaInvention Patent

Application data

Number

PI8900689

Type

Invention Patent

Filing

02/17/1989

Publication

10/10/1989

Progress at the INPI

  1. Filing02/17/89
  2. Publication10/10/89
  3. Examination10/22/91
  4. Allowance09/26/95
  5. Grant04/30/96
  6. Expired12/15/09

The letters patent expired on 12/15/2009: 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: 10/10/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Shell Internationale Research Maatschappij B.V

NL

See this company's full portfolio

Inventors

J. C. (pessoa física)

DE

L. S. (pessoa física)

DE

P. B. (pessoa física)

GB

Technical data

IPC Classification

Priority claims

DE

P 3805235.0 · 02/19/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

10/10/1989

RPI 990

Pedido de patente depositado

#2.1

04/04/1989

RPI 963

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: C07C 103/58; C07D 265/28.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

Patente extinta em 17/02/2004

12/15/2009

RPI 2032

Concessão da patente

#16.1

04/30/1996

RPI 1326

Deferimento

#9.1

09/26/1995

RPI 1295

Solicitação de exame técnico

#4.1

10/22/1991

RPI 1090

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