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Official data from INPI

PREPARAÇÃO DE CIANO-ACETATO DE ALQUENILA

ConcedidaInvention Patent

Application data

Number

PI7806108

Type

Invention Patent

Filing

09/18/1978

Publication

-

Progress at the INPI

  1. Filing09/18/78
  2. Publication
  3. Examination
  4. Allowance01/10/84
  5. Grant07/31/84
  6. Expired05/03/94

The letters patent expired on 05/03/1994: 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: 07/31/1984. 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. S. (pessoa física)

GB

Technical data

IPC Classification

Priority claims

GB

38900/77 · 09/19/1977

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/31/1984

RPI 719

Notificação para pagamento de retribuição

#13.1

05/02/1984

RPI 706

Deferimento

#9.1

01/10/1984

RPI 690

Exigência - art. 36 da LPI

#6.1

05/31/1983

RPI 658

Exigência - art. 36 da LPI

#6.1

09/14/1982

RPI 621

6.2

12/22/1981

RPI 583

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: C07C 121/407; C07C 120/00; C07C 253/00.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

05/03/1994

RPI 1222

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