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Official data from INPI

PROCESSO PARA PREPARAÇÃO DE 3-(3-METIL-4-ISOPROPIL-FENIL)-1, 1-DIMETIL-URÉIA, E, COMPOSIÇÃO HERBICIDA COMPREENDENDO TAL COMPOSTO.

ConcedidaInvention Patent

Application data

Number

PI8007953

Type

Invention Patent

Filing

12/04/1980

Publication

-

Progress at the INPI

  1. Filing12/04/80
  2. Publication
  3. Examination08/16/83
  4. Allowance07/09/85
  5. Grant02/04/86
  6. Expired03/19/96

The letters patent expired on 03/19/1996: 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: 02/04/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Shell Internationale Research Maatschappig B.V.

NL

See this company's full portfolio

Inventors

G. T. (pessoa física)

Technical data

IPC Classification

Priority claims

GB

7942224 · 12/06/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/04/1986

RPI 798

Notificação para pagamento de retribuição

#13.1

11/12/1985

RPI 786

Deferimento

#9.1

07/09/1985

RPI 768

Exigência - art. 36 da LPI

#6.1

09/18/1984

RPI 726

Exigência - art. 36 da LPI

#6.1

03/07/1984

RPI 698

Solicitação de exame técnico

#4.1

08/16/1983

RPI 669

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: C07C 127/19; A01N 47/30.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

03/19/1996

RPI 1320

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