A red-emitting phosphor composed of an M-Alâ€”Siâ€”N system, comprising a cation M, wherein M is represented by at least one of the elements Ca or Ba or Sr and, if appropriate, can additionally be combined with at least one further element from the group Mg, Zn, Cd, wherein the phosphor is activated with Eu, which partly replaces M, and wherein the phosphor additionally contains LiF.

Claims

8 · 1 independent · depth 2

8 granted claims

›1.independentA red-emitting phosphor composed of an M-Alâ€”Siâ€”Nâ€”LiF system, comprising a cation M, an activator Eu, and LiF, wherein M is selected from the gro…+7

Classifications

4 codes

IPC · International Patent Classification

Section C — Chemistry; metallurgy

C09K11/54
C09K11/08

USPC · US Patent Classification

252/301.4F252/301.6F

Claim changes

Soon

Coming soonHow the claims changed between publication and grant

See which claims were amended, added or cancelled during examination, with every added and removed word marked.

AmendedAddedCancelledUnchanged

The published claims of this patent are not paired with the granted ones in what we hold.

File wrapper

⤢ drag to zoom

USPTOApplicanthover for detail · click to open

Pendency

4.9 y

1,803 days filing → grant

Office actions

non-final + final

Responses

3 RCE

Examiner

Sarah A Slifka

art unit —

Law firm

Law firm · Log in to unlock

Citations: 11 back · 0 forward

See the full prosecution history — every USPTO and applicant action on this file, in order.

Term & fees

See the term timeline — pendency span, in-force span, the maintenance fees paid and both computed expiry dates.

Priority chain

1 priority documents

›Priority documents — 1

Type	Document	Date
related publication	US 20100096592 A1	22 Apr 2010

Validity challenges

See the validity challenges on record — reexaminations, IPRs and PGRs, with their institution decisions and outcomes.

Citations

See every patent this one cites and every patent that cites it back — publication, assignee, and how each one was found.