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Official data from INPI

PROCESSO E DISPOSITIVO PARA O FRACIONAMENTO DE SUBSTANCIAS POR CRISTALIZACAO

Concessão AnuladaInvention Patent

Application data

Number

PI7803457

Type

Invention Patent

Filing

04/24/1978

Publication

-

Progress at the INPI

  1. Filing04/24/78
  2. Publication
  3. Examination
  4. Allowance12/07/82
  5. Grant07/26/83
  6. Expired11/30/93

The letters patent expired on 11/30/1993: 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: 10/18/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

BUCHS METALLWERK AG

Inventors

B. R. (pessoa física)

R. H. (pessoa física)

S. K. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

16.3

10/18/1983

RPI 678

Concessão da patente

#16.1

07/26/1983

RPI 666

14.1

07/12/1983

RPI 664

Notificação para pagamento de retribuição

#13.1

05/17/1983

RPI 656

Republicação - classificação IPC

#15.11

01/11/1983

RPI 638

Deferimento

#9.1

12/07/1982

RPI 633

6.2

12/22/1981

RPI 583

Carta-patente expirada

#21.1

11/30/1993

RPI 1200

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