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Official data from INPI

PROCESSO PARA PREPARAÇÃO DE ÉSTERES DE ALFA-CIANO-BENZILA

ConcedidaInvention Patent

Application data

Number

PI7808148

Type

Invention Patent

Filing

12/12/1978

Publication

-

Progress at the INPI

  1. Filing12/12/78
  2. Publication
  3. Examination
  4. Allowance03/07/84
  5. Grant09/25/84
  6. Expired05/24/94

The letters patent expired on 05/24/1994: 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: 09/25/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Shell Internationale Research Maatschappij B.V

NL

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Inventors

C. T. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

860507 · 12/14/1977

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/25/1984

RPI 727

Notificação para pagamento de retribuição

#13.1

06/26/1984

RPI 714

Deferimento

#9.1

03/07/1984

RPI 698

Exigência - art. 36 da LPI

#6.1

08/23/1983

RPI 670

Republicação - classificação IPC

#15.11

04/26/1983

RPI 653

Exigência - art. 36 da LPI

#6.1

02/22/1983

RPI 644

6.2

04/06/1982

RPI 598

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: C07C 121/00; A01N 9/20; C07C 255/00.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

05/24/1994

RPI 1225

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