(11) 98705-3426
TrademarkIQ iconTrademarkIQ
Back to search
Official data from INPI

PROCESSO PARA A PREPARAÇÃO DE AMIDAS DE ÁCIDO 3,3-DIARIL-ACRÍLICO

PublicadaInvention Patent

Application data

Number

PI8802830

Type

Invention Patent

Filing

06/09/1988

Publication

01/03/1989

Progress at the INPI

  1. Filing06/09/88
  2. Publication01/03/89
  3. Examination03/05/91
  4. Allowance03/26/96
  5. Grant03/25/97
  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: 01/03/1989. 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

Technical data

IPC Classification

Priority claims

DE

P 37 19 488.7 · 06/11/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

01/03/1989

RPI 950

Pedido de patente depositado

#2.1

11/01/1988

RPI 941

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: C07C 103/58; C07C 147/00; C07D 295/18.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

Patente extinta em 09/06/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

03/25/1997

RPI 1373

Deferimento

#9.1

03/26/1996

RPI 1321

Exigência - art. 36 da LPI

#6.1

02/07/1995

RPI 1262

Solicitação de exame técnico

#4.1

03/05/1991

RPI 1057

Patent monitoring

Track this patent in real time.

Receive alerts on INPI events, decisions, and expiry dates for your portfolio.