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Official data from INPI

PROCESSO PARA CONVERSÃO DE UM ÉSTER-ESTÉREO-ISÔMERO PARA SEUS DIASTEREO-ISÔMEROS

ConcedidaInvention Patent

Application data

Number

PI7806323

Type

Invention Patent

Filing

09/25/1978

Publication

-

Progress at the INPI

  1. Filing09/25/78
  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

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Inventors

C. T. (pessoa física)

US

S. S. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

691773 · 03/30/1978

US

836625 · 09/26/1977

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

09/28/1982

RPI 623

6.2

11/10/1981

RPI 577

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: C07C 121/75; C07C 120/00; B01J 31/02; C07B 31/00; C07B 57/00; C07B 61/00; C07C 67/00; C07C 253/00; C07C 253/34; C07C 255/38; C07C 255/00.

03/20/2018

RPI 2463

Carta-patente expirada

#21.1

05/03/1994

RPI 1222

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