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Official data from INPI

PROCESSO PARA PREPARAR MERCAPTANS TERCIÁRIOS

ConcedidaInvention Patent

Application data

Number

PI7803029

Type

Invention Patent

Filing

05/12/1978

Publication

-

Progress at the INPI

  1. Filing05/12/78
  2. Publication
  3. Examination
  4. Allowance08/02/83
  5. Grant01/31/84
  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: 01/31/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

P. C. (pessoa física)

US

See this company's full portfolio

Inventors

B. R. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

797,704 · 05/17/1977

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

01/31/1984

RPI 693

Notificação para pagamento de retribuição

#13.1

11/22/1983

RPI 683

Deferimento

#9.1

08/02/1983

RPI 667

Exigência - art. 36 da LPI

#6.1

10/26/1982

RPI 627

6.2

10/20/1981

RPI 574

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: C07C 149/06; C07C 148/00.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

11/30/1993

RPI 1200

20.4

11/05/1991

RPI 1092

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